1, syphilis has 2 test results, one is qualitative, that is, to determine whether you are or not? One is quantitative, which is also to determine the degree of your syphilis how? And can determine the effect of your treatment. 2, qualitative indicators called TPPA (also used TPHA and FTA-ABS, is the same thing), is the syphilis spirochete antibody, is a confirmatory test. But it has a characteristic that is lifelong does not fade, once suffering from syphilis this “mark” will always follow you, just like a brand. So it is only necessary to check when diagnosing, after that it is not necessary to check again, there is no point. 3, quantitative indicators called RPR (also used USR, TRUST, VDRL are the same thing). Called non-syphilis spirochete antigen. This test result has a high and low, also known as the titer, 1 after the value of the larger, to a certain extent, the degree of syphilis, but the effect of treatment and titer is not related to the high and low. After treatment, it is important to review the indicators (RPR, USR, TRUST). A decrease in titer means that it is effective, while a decrease or increase in titer means that it is not effective and the cause needs to be found. It usually takes several months to more than a year to completely turn negative. 4, now how to look at the results, to determine whether there must be two indicators together test, TPPA and RPR. an indicator is not sure to say whether you have syphilis or not syphilis. So sometimes it is wrong to go for a physical examination or hospitalization and say you have syphilis with only one result. Some doctors who are not dermatologists can also get it wrong, so it is always advisable to have your condition explained by a dermatologist. 5, TPPA and RPR, both are positive (RPR may show a 1: not sure value, as long as it is not 0), can confirm the diagnosis of syphilis. 6, TPPA positive and RPR negative. Three possibilities: (1) You had syphilis before and treated it, because TPPA is a stigma that is always present, this situation does not need to be taken care of. (2) just suffered from syphilis, RPR blood has not yet produced, a month later to review a positive is syphilis, recessive is not syphilis. (3) False positive, what do you mean? It means that you originally do not have syphilis, but the result of TPPA appears positive, it is a false positive, very few cases may appear this situation, so you need RPR to determine together is this meaning. 7, TPPA negative and RPR positive. 2 possibilities 1. RPR false positive, some people are prone to appear, such as pregnant women, the elderly, but remember that the titer is relatively low, will not exceed 1:8. 2. If the RPR titer is relatively high, and TPPA is negative, it is recommended to recheck after 1 month. 8. What we should remember is that the two test results for syphilis are flexible and changeable, and we must listen to the advice of a professional doctor in the dermatology department of venereology.