Question: what is the difference between pregnancy test and ovulation test?
Answer: An ovulation test works by detecting the surge in luteinizing hormone (LH) that precedes ovulation. Pregnancy tests work by detecting the presence of human chorionic gonadotropin (hCG) in your urine. ... So similar, in fact, a standard ovulation test (OPK) is unable to distinguish between LH and hCG in your urine.