Proov progesterone test strips test for a urine metabolite of progesterone called Pregnanediol Glucuronide (PdG), which has been shown to correlate to progesterone in the bloodstream. Without progesterone, conception is not possible, and low progesterone is the number one cause of infertility and preventable miscarriage. Thus, Proov helps detect low progesterone, which can be easily fixed via diet changes or progesterone supplements. Ovulation tests monitor Luteinizing Hormone (LH), and answer “When should I have intercourse?” These Ovulation Predictor Kits (OPKs) predict your fertile window. These OPKs include Clearblue, First Response, EPT, Easy@Home, Pregmate, ClinicalGuard, Veratrue, Wondfo, Daysy and iProven. After predicting the fertile window with OPKs, Proov is used to track daily progesterone levels and help understand if they are high enough, for long enough to support conception. Unlike a single progesterone blood draw, Proov can track daily progesterone throughout your cycle providing additional valuable information. Proov fills the gap, and answers "Is my body hormonally ready to support conception?" by tracking progesterone. Knowing both the timing of the fertile window and if progesterone levels are high are essential for improving your chances for conception. Excellent for hormone and fertility tracking, trying to conceive (TTC), fertility awareness, and of course ovulation confirmation. Progesterone is queen.