... qualitative immunoassay for the detection of human Luteinizing Hormone (hLH) in human urine to predict the occurrence of ... ovulation. Ovulation is regulated by the elevation of human luteinizing hormone (hLH). Usually, around 14 days ... the period starts, hLH has a brief, significant rapid increase called the "LH surge". The hLH surge ... polybag, 100polybags/carton. One Step LH Ovulation Rapid Test Kit