AccuMed 3-Count Pregnancy Midstream (HCG) Test, Clear and Accurate Results, 99% Accurate AccuMed One-Step HCG Pregnancy Tests are made to the highest quality standards. AccuMed provides US support and warranty. The pregnancy test detects the presence or absence of human chorionic Gonadotropin ("HCG") in the urine. Low-cost midstream tests that don't advertise their sensitivity ratings are not as accurate and sensitive as Accumed HCG Pregnancy. It measures the level of human chorionic gonadotropin, which is a pregnancy hormone, in your urine.