What are the negatives and positives?

Negative means that there is no negative reaction with the reagent, that is, there is no corresponding antigen in the body fluid.

Positive refers to positive reaction with reagents, indicating the existence of corresponding antigens in body fluids.

Generally speaking, a positive (+) indicates that a disease or physiological change in the body has certain results. For example, the urine pregnancy test of menopausal women is positive (+), which means that women are pregnant and psychologically prepared.

For another example, the test result of hepatitis B surface antigen is positive (+), indicating that this is a patient with hepatitis B or a carrier of hepatitis B virus, which needs attention.

On the contrary, a negative (-) on the test sheet or report basically denies or excludes the possibility of a certain lesion.

Extended data:

Generally speaking, from a medical point of view, positive represents illness or virus, and negative represents normal.

"Negative" and "positive" are widely used in medicine, and have become a term to indicate the presence or absence, or to indicate the results of an examination.

In addition, there are quite complicated false negatives and false positives, which should be judged according to everyone's specific situation.

And quite a few people always think that "negative" is better than "positive", which is a misunderstanding.

References:

Front-Baidu Encyclopedia