Why can't I find the personal blood donation information of unpaid blood donors?

Only the blood station in the blood donation place can find the blood donation information of the blood donor. At present, the personal information of blood donors belongs to personal privacy and cannot be made public. You also need to provide the ID number and blood donation code of the blood donor to query the website. National networking is impossible in the short term, because blood stations are managed locally, not nationally. At present, marriage registration has not been networked nationwide, and it will take a long time for blood donation information to be networked nationwide.