General information One-step cow pregnancy rapid test is to improve milk output and shortening the period of non-pregnancy. Analytical sensitivity : 2ng/ml Sensitivity : 96.9% , specificity : 97.8% Specimen : milk Reading time : 5 min No cross-reactivity: fsh (100g/ml), e2(10g/ml), prl(100g/ml), lh(25miu/ml), dht(10g/ml), tetraborane(10g/ml) and h2o.