One step syphilis tester is a rapid direct binding screening tester for the presence of antibodies to syphilis. Features: 1) TP C20-12: a) Type: strip b) Specimen: serum/plasma c) Package: 1pc x 100/kit d) Specification: 3.0mm e) Sensitivity: 2NCU/ml f) Specificity: >99% 2) TP C20-13: a) Type: strip b) Specimen: serum/plasma c) Package: 1pc x 100/kit d) Specification:4.0mm e) Sensitivity: 2NCU/ml f) Specificity: >99% 3) TP: C20-20 a) Type: cassette b) Specimen: serum/plasma c) Package: 1pc x 40/kit d) Specification: 3.5mm e) Sensitivity: 2NCU/ml f) Specificity: >99%