The serum samples from the patients who were TPHA-positive were tested in parallel by enzymeimmunoassay (EIA) and syphilis toluidine red untreated serum test (TRUST).

• 用TPHA进行抗梅毒抗体筛查，检测阳性的标本再用酶免疫法、甲苯胺红不加热血清试验(TRUST)、免疫印迹法进行检测。