Is donating blood really good for your health? Can it really promote the regeneration of new blood?

Xudong: People are concerned about things, and the hotline is in progress. Dear viewers in front of the TV, welcome to watch our live broadcast of "Beijing Hotline". Today's program is jointly presented to you by Beijing TV's "Beijing Hotline" and Beijing Urban Management Broadcasting's "City Zero Distance" program. live streaming. Hello everyone, I am Xudong, the host of "Beijing Hotline".

Huang Yan: Hello everyone, I am Huang Yan, the host of Beijing Urban Management Radio's "City Zero Distance" program. What topic do we want to talk to you about today? Let me tell you a song title first, "Let the World Be Full of Love". This song was sung by hundreds of singers back then, and everyone must still remember it. Now this song title has become a promotional slogan. This is what happened just now. One of our promotional slogans on June 14th is called "Let the world be filled with love".

Xudong: This is the theme of World Blood Donation Day.

Huang Yan: Today we want to talk to you about the topic of blood donation. Some people ask whether this is a cliché. Of course it is not, because Beijing has some new changes in blood donation from now on, so today we Let’s talk about this topic.

Xudong: First of all, let me introduce the guests who came to the live broadcast room today. They are Mr. Ma Guodong, deputy director of the Beijing Red Cross Blood Center, and Qiu Yan, deputy director of the Beijing Red Cross Blood Center. Welcome. Two people.

Huang Yan: I would like to introduce some of the guests here. First, I would like to introduce Hong Jiantao, Squad Leader Hong, and Jing Fengling to welcome you. The next person I would like to introduce to you is Liu Bin. When I see you, I immediately see the black boss. It seems that your role is very popular among the people. There is also Jiang Wei, a famous reporter from Beijing Youth Daily.

Jiang Wei: I have written many reports on blood donation, and I have also donated blood. Just now I saw the word "blood" because it is also blue, so I thought of the sea, because water is people's life, like blood. It is also people's life and is indispensable.

Huang Yan: Speaking of blood, we know that the blood collection volume in Beijing last year was 420,000 units. How much is this? One pound is about 84 tons. Today we asked two deputy directors of the blood center to introduce to us that the amount of blood donated by Beijing last year should be said to be very large. Is this amount enough for our consumption in Beijing last year?

Ma Guodong: It should be said that 42 units should be enough for Beijing’s blood supply last year. But we can see from the data over the years that Beijing’s annual blood supply is basically growing at a rate of 10%. This is mainly due to the development of some new medical technologies and technological advancements, which have resulted in an increase in the amount of blood used. Beijing's 420,000 units is also a very large number nationwide. Nationally speaking, cities like Beijing use a lot of blood. Cities like Shanghai and Guangzhou use about the same amount of blood as Beijing, but these two cities are not as large as Beijing.

Huang Yan: Everyone has a question, are they safe with such a large amount of blood?

Xudong: Yes, such a large amount of blood. Deputy Director Qiu, please tell us how we can ensure that such a large amount of blood is foolproof during this blood collection process.

Qiu Yan: There is actually a core issue in the blood supply process, which is blood safety. The safety guarantee of blood is that we control every aspect of the entire blood collection and supply process. Why should we vigorously promote voluntary blood donation now? The first thing is to ensure safety from the source of blood and the blood donation team.

We believe that people who donate blood for free are donating love. They do not have any utilitarian purpose or money for any benefit, they just do it to donate love. During the blood donation consultation, if our nurses and doctors explain clearly that the blood donated by healthy donors is safe, but if the donor has a certain disease, the donated blood is unsafe, and the patient and the recipient will also be affected. Even if there are some unfavorable factors, the control of these links can ensure the safety of blood. This is the guarantee of the work we do in the environment where we see our blood collection vehicles collecting blood in public places.

For example, when blood is collected and returned to the center, we follow the requirements of the Ministry of Health and some of the world's common blood safety guarantees to do some blood processing, blood screening, blood isolation, and clinical blood transfusion. , some observations on blood transfusion reactions, as well as which kind of blood you use and how to use it, etc. Every aspect is to ensure that the blood we donate is safe for use on patients. The ultimate manifestation of blood safety is that the blood recipient can receive good treatment, obtain certain therapeutic effects, and show safety. This is its core.

Huang Yan: I would like to ask the guests and friends here how they felt when they heard that we collected so much blood last year.

Hong Jiantao: More than 80 tons. The water we use as a family every year is probably calculated in tons.

Xudong: How much water can we use in a year, more than ten tons, more than this, right?

Hong Jiantao: Not much, actually not much. If you want tap water at home every day, there are bottles hanging and beeping in the hospital every day.

Xudong: You still don’t think it’s much. How do you feel about it and do you plan to contribute some?

Hong Jiantao: Give me some.

Xudong: How does Feng Ling feel?

Jing Fengling: I feel pretty good. I don’t know if our current blood bank is in short supply.

Huang Yan: Do you want to donate again?

Jing Fengling: Yes, I want to donate it again and get another copy for him. Then what did the old one of us think?

Xudong: When I heard this number just now, I felt it was quite glorious. I donated blood twice on stage. I think 80 tons, although this year's 80 tons are not included, I think I must have a share of the tons in 2002. Although it is less, I still have a share. Have you two donated blood?

Liu Bin: Sorry, I have never donated blood. But given my current physical condition, being so fat, my blood lipids must be high. Does this meet the standards for blood donation? If the expert says it's OK, I'll do it. Because I think the 84 tons mentioned just now mainly depends on whether the amount in Beijing is enough. If it is enough, I don’t know much about blood preservation, but I want to ask?

Xudong: I think Teacher Liu Bin asked a professional question, how long can donated blood be stored?

Liu Bin: 84 tons. If it is too much, is there an expiration date? Don’t waste it unnecessarily. It must be used effectively. After all, blood is not like water that can be obtained by twisting a water pipe. Learning is thicker than water. Why is it only more than 80 tons?

Ma Guodong: Let me explain. It is difficult for everyone to have a sense of what the 84 tons mentioned just now means. We can say that a person's blood basically accounts for 8% of the body. If a person weighs 100 kilograms, his blood volume is generally 4000 milliliters, which translates into a weight of four kilograms. 80 tons is equivalent to all the blood in the body of 20,000 people. It can basically be understood this way, which is more vivid.

Just now, Teacher Liu mentioned a blood storage period. Currently, our blood storage method can only store blood for 35 days, and the longest storage period is 35 days. Therefore, unlike other products, blood can be kept for a long time after production, sold when needed, and a certain amount of inventory can be accumulated. Therefore, this inventory cannot be too large. If it is particularly large, waste may occur. But it can’t be too little, especially less will not be enough once there is a big blood consumption peak.

We are also constantly exploring this work. The previous inventory was about 3,000 units, but now the usage in Beijing is gradually increasing, and is currently controlled at the level of 5,000-10,000 units.

Hong Jiantao: In fact, this preservation process should be solved. Can it be frozen? Nowadays, everything can be frozen, such as sperm and eggs, because blood is also a part of the human body. Is this also possible?

Xudong: Actually, you can, but you have to consider the cost, right?

Qiu Yan: Our current methods of preserving blood have different methods for different components. For example, our common solution to your ischemia and anemia is red blood cells.

There are currently two main ways to preserve red blood cells. One is that we add some nutrients, such as glucose and other anticoagulants, to preserve them. We know that the growth cycle of red blood cells in the body is 120 days, so generally when our blood is collected, we When it is preserved for 35 days, current science and technology have found that 48 hours after the blood is transfused to the patient, 70% of the blood you transfuse still has the ability to carry oxygen. It does not mean that I have preserved the red blood cells and they are not dead. It can Continue to save it to survive, but you need to inject it into the patient to function. Therefore, our current storage method of 35 days is to ensure that the red blood cells transfused to the patient are still capable of speaking.

The guest just mentioned the freezing. In fact, there are many methods for freezing red blood cells. For example, freezing at minus 80 degrees and minus 160 degrees. The purpose of freezing is to prevent the red blood cells from undergoing metabolism and maintain a certain state. It is refrozen while sleeping. This method is mainly used for rare blood types. For example, the RH negative blood type in the blood we use in Beijing. This rare blood type is very rare. Once it is available, we can freeze it and preserve it. Defrost until needed.

Xudong: How rare is this blood type?

Qiu Yan: It depends on the race. For example, the ratio between black and white people is about 15%-20%. In Asian populations, such as China, there are only one to four thousandths.

Hong Jiantao: This World Cup is a good opportunity.

Jiang Wei: The two experts said they were very professional, but I don’t have any perceptual knowledge. I would like to ask the two directors that 84 tons of blood is a large amount of blood collection in Beijing in your years of work experience?

Ma Guodong: As I mentioned just now, we are growing at a rate of 10% every year. When we say that 84 tons, we refer to the data in 2005. We are only halfway through 2006 and the data is not yet known. But this 84 tons is the highest in Beijing's history.

Jiang Wei: How big is the blood reserve in Beijing now? If it reaches 200 tons this year, can Beijing meet the demand?

Ma Guodong: This understanding is different. Our blood is in constant circulation, that is, we are constantly collecting blood and using it clinically. It goes in and out at the same time. It cannot be said that it is always stored. Because as mentioned just now, blood has a shelf life of 35 days and must be continuously collected and returned. Therefore, we collect blood on the streets every day and also distribute blood every day.

Jiang Wei: I just heard that voluntary blood donation is mainly based on love, and love is the first step in blood donation. I donated blood nearly 20 years ago. At that time, they only tested my blood type, and then asked me if I had a history of genetic diseases. That is to say, in this case, I am caring, but I don’t know if I have a genetic disease. What should I do?

Qiu Yan: In fact, blood transfusion medicine began in the 190s, after the discovery of the ABO blood type, and it has gradually matured and developed as a scientific branch. You said you donated blood 20 years ago, in the 1980s. At that time, we had not discovered that hepatitis C was a blood-borne disease. This disease was discovered in 1989. Moreover, AIDS was not discovered until 1980 or 1983, and the first HIV-infected person was detected at that time. Only in 1980 did some countries in the world begin to screen for AIDS transmitted through menstrual blood. Our country HIV screening only started in 1993, so at that time, you were not aware of the reality of these diseases in our country. At that time, we only checked for hepatitis B. But now the investigation has been very detailed.

Xudong: Yes, as far as I know, among my colleagues, some of them are very tired after working all night. When they donate blood the next day, they will be tested for elevated transaminases and they will not be able to donate blood.

Qiu Yan: Yes, with the development of this science, we also need to conduct health examinations and consultations to ensure the health of blood donors during our voluntary blood donation work. For example, at the end of the blood donation consultation form, you will be asked whether there are various conditions. If so, of course one affects the health of the blood donor, and the other affects the life safety of the blood recipient. Therefore, we can also divide those who cannot donate blood into several categories. The first one is that you have a menstrual blood-borne disease, and you are a carrier, so you cannot do it. There are also some people who are suspending blood donation. For example, if you have a poor rest or alcohol consumption, which causes elevated transaminases, you cannot donate blood to protect yourself. But after a month, your indicators are normal and you can donate blood.

There are also some diseases that prevent you from donating blood. In order to ensure the health of blood donors, we will check some important indicators or diseases with relatively high prevalence before donating blood. For example, hepatitis B is relatively high in the Chinese population. We also have to do some screening and testing. Therefore, the blood transfusion industry has undergone tremendous changes now compared to 20 years ago.

Xudong: Friends in front of the TV, what you are watching is the live broadcast jointly conducted by Beijing TV Station "Beijing Hotline" and Beijing Urban Management Radio "City Zero Distance". What we are talking about today is some topics about voluntary blood donation. As you know, after the World Blood Donation Day on June 14, Beijing has also made some adjustments to blood donation work, including promoting blood donation. What is an example of component blood donation, and what is its relationship with our blood donors? We will explore this issue after an advertisement.

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Xudong: Welcome everyone to continue to pay attention to the live broadcast of "Beijing Hotline". Our programs are jointly delivered to you by "Beijing Hotline" and "City Zero Distance" superior. Before talking about the components of blood donation, let’s first look at the questions from our audience friends.

Huang Yan: The person with the mobile phone number 2239 made a very good note. He said that after the daily weather forecast, please broadcast what blood type and amount are needed. Everyone can use this index to donate blood.

Xudong: This is a great idea, very clever. Daily blood donation index, I think it can really do this job.

Huang Yan: The last time the HR Yin type was short of blood, there were some blood types that were severely deficient.

Qiu Yan: So-called management of our blood inventory, for example, the ordinary ABO system is 3000 to 5000, or 5000 to 8000. We have a warning line and a reasonable inventory line according to different seasons. HR negative blood also has this line. If it reaches the warning line, we have to rely on the media to appeal.

Xudong: The traffic station said that the airport currently lacks a large number of taxis, and then the taxi drivers went there. You can also send this one.

Hong Jiantao: I have also thought about this issue. There must be peaks and troughs, such as during holidays, when you are resting, you may want to donate blood, when you are busy, and when it is hot. There may be fewer people donating because the human body needs a larger amount. If what I just talked about is solved, there should be no problem. If a blood donation index is announced every day, it is everyone's business. I donated blood, but it was returned. The blood was too thick. It took a long time to draw only a little, but it could not come out.

Xudong: Is it determined by personality? Therefore, in situations like this, we also need to establish an early warning mechanism, or a mechanism to inform citizens.

Huang Yan: You can understand these in ordinary days.

Xudong: A friend with a mobile phone number ending in 3058 said that I donated blood not long ago. I would like to know how your blood collection center is allocated to hospitals? Did the hospital buy it from you?

Qiu Yan: The blood we collected must first be screened when it returns to our blood center. In addition, we need to process and divide this blood into different components according to clinical needs. At present, the blood center in Beijing supplies more than 300 hospitals in Beijing. Its clinical patients need blood. Each hospital must also have a blood transfusion management committee. The first thing to do is to evaluate how much blood the patient needs and what kind of blood he needs. , whether it is reasonable. On the one hand, this ensures the safety of blood transfusion, and on the other hand, it can save blood transfusion resources. Because we know that it is not an easy process for everyone to donate their love, so we also need to save money. To decide what blood to transfuse for this patient, the blood bank of the hospital and the blood bank of our center will make a call to order the blood, and then we will send a driver to deliver it.

Xudong: Let’s talk about the whole topic. I mentioned component blood donation earlier. This is something we strongly advocate after the adjustment of our blood donation policy. What is component blood donation?

Qiu Yan: This is also consistent with the general trend of the development of blood transfusion medicine. Blood transfusions in the early days were whole blood, which meant that blood collected on the streets was used for transfusions if it passed the test. However, two problems were discovered during the blood transfusion process. The first is that the components in blood are very complex, and the other is the components of plasma, the liquid we are talking about. There are also various tangible cellular components, such as red blood cells, white blood cells, platelets, etc.

For example, some patients do not need all the components. He may only be anemic. I only need red blood cells. If I have bleeding, I only need platelets. If I have an infection, I only need white blood cells. In this way, we can divide the blood drawn back into different components, so that we can solve the problem that the patient does not need. Transfusing unnecessary components reduces transfusion reactions and saves our blood resources.

Xudong: Is this also good for the blood donor’s own body?

Qiu Yan: It was like this at first. In fact, with the development of this technology, there is now a machine. When you donate blood, we can collect whatever we need.

Hong Jiantao: We can go back again.

Qiu Yan: For example, if we need platelets, we will only collect your platelets and transfuse the others back to you.

Hong Jiantao: I think it’s better to go out all at once. This ratio is still normal in the body. I went out and came back with low platelets. I wonder if this is harmful to the human body.

Qiu Yan: This is related to the physiology of the human body. For example, the companion period of platelets in the body is only 10-11 days, and they will be eliminated soon. You collect part of it, and the rest will be metabolized and replenished from the spleen.

Jing Fengling: I would like to ask the experts a question. As the two of them are so fat, their blood is not up to standard. For example, blood transfusion. I have heard of blood transfusion before, which means that the body needs a part, which can be filtered and then replaced. Is there such a thing?

Qiu Yan: This has nothing to do with blood donation, but it is a type of blood treatment, which is to treat high blood lipids. In fact, blood donation has nothing to do with obesity. As long as lesbians weigh more than 90 kilograms and gay men weigh more than 100 kilograms, they can donate blood.

Jing Fengling: What I mean is that as long as I change it for them, I can donate it, right?

Qiu Yan: As long as there is no blood coagulation, you can donate.

Jiang Wei: People with high blood lipids should drink more boiled water before donating blood. Can they reach the target before donating blood?

Liu Bin: What she just said is that you need your platelets, and the fat in your blood is back.

Xudong: The two directors just said that the blood of Hong Jiantao and Liu Bin can be used, as long as you have the desire to donate blood.

Hong Jiantao: It is impossible for you to lower blood lipids by donating blood. But why do some people develop other diseases after receiving blood transfusions in the hospital, such as hepatitis B and AIDS? Why can't this condition be controlled? Doesn’t it mean that everything has been inspected?

Qiu Yan: Before we carry out all tests, blood produced after 1993 should be relatively safe. Before 1993, if there were still some projects that did not increase testing, some people might get some menstrual blood-borne diseases. But for now, our blood has been screened twice, using imported reagents, so it should be very safe. Unless it is in the sore stage, that is to say, the blood donor was infected with the virus, but he donated blood before his body produced the indicators we want to detect. At this time, it may be transmitted to the patient. That’s why we recruit unpaid blood donors from low-risk groups. For example, the consultation form asks if you have a lot of behaviors, such as if there are high-risk groups that are susceptible to that disease, you should not donate blood. So don’t underestimate this consultation and testing. For example, if you have one, I will test it for you, and another person is infected. If the indicators I want to test are not available, it will not be detected, and menstrual blood-borne diseases will occur.

Hong Jiantao: I used to faint from needles, so I was afraid, and I was also too stressed about some strange rumors about blood donation. Like some people said this is the essence, that’s it. Once you get it out, you will lose it. , anyway, there are many similar concepts.

Qiu Yan: Let me interrupt, your concept is wrong.

Hong Jiantao: I know this is wrong, so I say that we should eliminate everyone’s fear in publicity.

Xudong: Can you first tell me what you are most afraid of?

Liu Bin: It is said that donating blood is okay and can regenerate, but he would rather believe that.

Hong Jiantao: I am afraid of big needles. The needles used to be very big. When they donated blood in the 1980s, they had big, thick tubes.

Xudong: I remember that the needles were very big when I donated blood in 1992. You first tell me what you are most afraid of, and let our director solve your problem in a targeted manner. You will definitely contribute after today's program.

If you say you're afraid of big needles, let's change them to smaller ones.

Hong Jiantao: In fact, I am afraid that it will be bad for the body and the body's regenerative function. For example, if someone has high blood pressure or high cholesterol, I am always afraid of this. Originally, you said you didn't have any disease, but it turned out that you had this disease after a blood transfusion. I'm afraid of this.

Xudong: Another time when I was donating blood, I heard my colleagues around me say, "You can't donate blood. You will gain weight soon after donating." This statement is very popular, coupled with some previous statements, please two directors explain to us, is there such a problem?

Ma Guodong: As far as blood donors are concerned, the equipment used by our blood donors are all disposable and are qualified products recognized by the state. Therefore, during the blood donation process, there will be no adverse effects on blood donors, such as the spread of diseases and infections. Please rest assured that we are very strict at this point. And we also have many relevant departments that will supervise us. It’s not just because we say it’s okay. The health supervision department in Beijing will check us, how we purchase goods, and whether all the qualifications are complete, so you can rest assured about this.

Just now you said, will other people get the disease? In accordance with the inspection standards of the Ministry of Health, we strictly tested all blood twice, that is, two different reagents, different personnel, and different equipment were used for screening. This prevents possible errors caused by adverse consequences. Therefore, it should be said that under the current level of science and technology, our blood is very safe, not only for blood donors, but also for blood recipients.

Hong Jiantao: They said drinking more brown sugar water before donating blood can dilute the blood?

Ma Guodong: In fact, we encourage everyone to drink more water when donating blood. In fact, this is so that the blood donor can be more comfortable during the blood donation process, the blood will flow faster, and clotting will be prevented.

Liu Bin: If you drink water temporarily, you will be like 8 kilograms of human blood. How much can be dissolved in it?

Ma Guodong: Let me explain another example. In fact, for the human body, 20% of the blood in our body is stored in internal organs, such as the spleen. It will store a large amount of blood. I just said that donating 400 ml of blood is 10%. Needless to say, this blood volume can be replenished from the spleen at that time. So this is no problem at all.

Jing Fengling: I know many people who are addicted to donating blood and feel uncomfortable if they don’t donate for a period of time. Is his hematopoietic function good?

Hong Jiantao: That person is caring.

Jing Fengling: Just to put it this way, I have heard that people who often donate blood say this. That person often donates blood. Is it because of his hematopoietic function? If he doesn’t donate blood, he will feel particularly uncomfortable.

Qiu Yan: Blood donation is actually a stimulating process for the body. After you donate 400 ml of blood at a time, in addition to the body's replenishment of blood from the spleen, for example, if you drink appropriately Water expands blood volume, which at this time stimulates your blood volume, stimulates hematopoietic cells and hematopoietic organs to form hematopoiesis, thus promoting your metabolism, which is a healthy performance.

Xudong: Excuse me, let me ask two serious questions. My friend with the mobile phone number ending in 6296 said, hello hosts, why are blood donations free of charge now, and patients are charged so much for blood transfusions in the hospital? This is a text message for more money. Mr. Chen also asked on the phone, why don’t patients receive free blood when donating blood?

Qiu Yan: Actually, the blood in our country is collected on the streets for free, and we have to charge patients a certain fee when it comes to the hospital. First of all, this fee is uniformly stipulated by the National Development and Reform Commission, and each whole blood unit is 200 ml. Second, as a public institution, we have certain costs in the collection, testing, processing, and clinical distribution of blood, such as the cost of testing reagents, equipment, and blood bags to separate components, including some during collection. The cost of consumables is a cost.

Ma Guodong: When the National Development and Reform Commission sets the price of blood, it calculates the cost of blood based on blood collection, processing, testing, storage, etc.

Xudong: We donate blood voluntarily, but there are processing, management and distribution costs.

Ma Guodong: From the perspective of blood, blood is priceless. You cannot measure the value of blood.

Jiang Wei: For example, for people like us who have donated blood, can we use the donated blood for free?

Huang Yan: We have a friend with a mobile phone number ending in 3149 who has the same question as you. He said that I am a blood donor and what he is concerned about is that when my family uses blood, I and I My family members have different blood types. Can my family members have priority?

Ma Guodong: Beijing’s blood donation return policy stipulates this. As a citizen of Beijing, after you donate blood, you can enjoy the equivalent of five times the amount of blood you donated within five years from the day you donate blood. This period is equivalent to five times the amount. After five years, the same amount of blood can be used for free for life. This is for the blood donor himself. Immediate relatives of blood donors, that is, parents, spouses and children, can use the same amount of blood for free within five years.

Xudong: I want to move on to a more serious question, and I have to put an advertisement first. After the advertisement, we will continue to talk about blood.

(Advertisement)

Xudong: Welcome everyone to continue to pay attention to the joint live broadcast of "Beijing Hotline" and "City Zero Distance". Today we are talking to you *** Some new measures and methods regarding blood donation.

Huang Yan: Donating blood is an honor. Everyone has various questions about blood donation. A friend here with a mobile phone number ending in 2889 asked: I donated 400ml at the front door in April this year. The staff said that I can still donate after six months. I would like to donate again if I have the opportunity. , can it be done in less than six months?

Ma Guodong: No. This is not allowed according to the provisions of our country’s People’s Republic of China and the National Blood Donation Law.

Xudong: The law has provisions.

Ma Guodong: The law stipulates it, and we strictly implement it.

Xudong: Many people ask about the amount of blood donation.

Huang Yan: Mr. Wang asked if a 17-year-old can donate blood?

Xudong: Definitely not. As long as you are under 18 years old, you cannot do many things.

Hong Jiantao: Are those bloody heads under control? I used to hear a lot about it in newspapers.

Xudong: Not from Beijing. I'm going to ask another serious question, so don't interrupt me. Regarding the issue of blood donation amount, many friends asked if we didn’t donate 200CC before, why should we donate 400CC now?

Jing Fengling: Jiang Wei, you offered 400, right?

Jiang Wei: Yes.

Xudong: I donated a total of 400 twice. Is 400 a lot? Why? Are there any scientific principles?

Ma Guodong: Let me explain this to you. Our blood donation law stipulates that each citizen can donate 200-400 at a time when donating blood. That is to say, these 200 and 400 existed before and are not new discoveries. Why is it recommended to donate 400 ml here? Because 200 ml and 400 ml are harmless to the blood donor itself and have no impact on your body.

But donating 400 ml of blood has more benefits to the recipient. For example, no matter how good other people's blood is, it is transfused under forced circumstances. It is a foreign substance. This foreign substance may have some blood transfusion reactions due to the mismatch of some antigens and antibodies. Just now everyone also mentioned the dangers of some infectious diseases caused by blood transfusions. Here is an example, if a patient needs 800 ml of blood transfusion, if you donate 400 ml, the blood of two people will be transfused to him; if it is 200 ml, the blood of four people will be transfused to him. Our safety level is Under a standard situation, it is obvious that 400 is safer for blood recipients, and the prerequisites are the same for blood donors, without any harm, so from this perspective, this is why 200-400 is recommended now.

Xudong: Another question is how much blood is needed to donate blood?

Qiu Yan: Now according to national standards, because we measure platelets according to their quantity, each unit is now 2.5 times 10 to the 11th power of platelets. But the platelets we collect are suspended in plasma, which is about 250-300 ml.

Xudong: There are also questions from the audience that have nothing to do with blood transfusions. Mr. Liu asked me that I am fat. I would like to ask Liu Bin and Hong Jiantao, do you often drink tea? Does it work?

Hong Jiantao: Let’s change the topic of today’s program.

Huang Yan: This friend asked, Mr. Zhang from Dongcheng District said if there are any preferential policies for taxi drivers to donate blood? Where can you donate blood?

Qiu Yan: In fact, regarding blood donation, as a voluntary and unpaid blood donation, the action and behavior are the same for any group of people. In addition to the blood collection points in our center, there are more than 30 mobile blood collection vehicles in busy streets in Beijing such as Wangfujing and Xidan, where you can get blood.

Huang Yan: Are the sanitary conditions of blood collection vehicles the same as those of fixed hospitals? Do some people have such concerns?

Qiu Yan: Our health requirements and infection control for this mobile blood collection vehicle are completely in accordance with the national requirements for hospitals, and the Health Inspection and Supervision Office will also conduct regular inspections.

Xudong: Let me ask one last question. Many friends today asked many specific questions, which have a lot to do with their own families and individuals. However, due to the time today, We cannot answer them one by one. If you want to know such questions, how can you contact our blood center and what channels can you use to get answers?

Qiu Yan: Our blood center has a consultation hotline.

Ma Guodong: 8006102233. If this number is busy, you can call 82079988 and your call will be transferred to our Public Relations Department. They can answer your questions.

Huang Yan: We also have a website with many introductions.

Xudong: Beijing Red Cross Blood Center, you can enter this URL to check the problem. Today's program is coming to an end here. After the program, we will organize another voluntary blood donation. Thank you for your attention. In the next issue of our "Beijing Hotline" we will continue to broadcast issues closely related to your life. See you in the next episode.