Ovulation test kit strip/ cassette/ midstream: Sensitivity: 99%, Specificity: 99% Ovulation test kit strip/ Cassette / Midstream: A rapid, one step test for the qualitative detection of luteinizing hormone (LH) in urine. Sensitivity: 99%Specificity: 99% Packing:Strip: 50pcs/box, 5000pcs/cartonDevice: 25pcs/box, 2000pcs/cartonMidstream: 1pcs/box or in bulk packing