hCG Pregnancy Test Strips are the most cost effective way of detecting pregnancy. ME3501 Pregnancy Urine Test Strips measure the level of pregnancy hormones in the urine with results of over 99% accuracy. ME3501 hCG Test Strips detect levels of HCG as low as 20 mIU/mL within just 2 to 5 minutes. hCG Pregnancy Test Strips can be used by simply dipping the test strips into the urine sample for several seconds, laying flat then wait to read the results. Each test strip is sealed in individual foil pouch.