Now the procedure for testing HIV is as follows: 1. Each hospital is a screening test, the main methods are enzyme, gold standard method, and some units use chemiluminescence. These methods are very sensitive, in order to avoid missed diagnosis, that is, a positive is not necessarily AIDS. Negative can send a report, positive may not be issued. 2.If the hospital test is positive, then send it to the local CDC for confirmatory test, using the immunoblot method, and finally issue a confirmatory report: negative or positive. 3, suspected positive blood sent to the CDC must be dedicated, special vehicles, special tools, this is for biosafety needs. The report also has to be picked up by a dedicated person and vehicle to protect privacy. No fax, telephone, network, etc. 4.Hospital get the positive result, immediately notify the doctor and myself, come to the hospital to ask medical history, etc., and finally fill out the form to report.