Because I have always been relatively clean, the relationship between husband and wife is very good, and I have not had contact with other people, why did I find out syphilis when I drew blood. First of all, the diagnosis of syphilis consists of three aspects, contact history, clinical manifestations, and serologic testing, so the serologic result is only one of the aspects. As a test, the possibility of false positives exists with any test. First of all, after the blood is drawn this specimen, for example, has contamination or hemolysis, in which case there is a possibility of a positive result. In this case, the test can be repeated at intervals or in different medical institutions, and the result may be negative, so syphilis can be ruled out at this time. If the patient has other diseases, such as lupus erythematosus, rheumatoid arthritis, in this case, because the body itself has a variety of autoantibodies, and this time the blood test for syphilis, syphilis antibodies may also appear positive. Generally speaking, the titer of the syphilis antibody result at this time will not be too high, not more than 1:8, and the real syphilis can often reach 1:32 or 1:64, if it is a false-positive, it is generally rare that both results are positive, and it is RPR-positive or TPPA-positive. So in this case, testing for both RPR and TPPA to help determine if the result is true syphilis or false syphilis. Even if this result is positive, it is not necessarily syphilis if there are no other corresponding symptoms, such as no ulcers in the genital area, no rashes on the body. Because there are some cases, the pathogen of syphilis is syphilis spirochete, syphilis spirochete infection, the body can be found in syphilis serology positive results; there are some other pathogens, including yaws spirochete results, structure and syphilis spirochete very similar. If infected with other spirochete diseases, the body test can also appear positive results, according to the different conditions of the patient to do specific analysis.