Beta hCG, also known as quantitative serum beta-HCG, refers to the testing of the amount of hCG hormone present in the blood. hCG is measured in milli-international units per milliliter. This is abbreviated as mIU/ml.. An hCG level of less than 5 mIU/mL is considered negative for pregnancy, and anything above 25 mIU/mL is considered positive for pregnancy. An hCG level between 6 and 24 mIU/mL is considered a grey area, and you’ll likely need to be retested to see if your levels rise to confirm a pregnancy.. mIU/mL, IU/L Similarly to LH, FSH and TSH, human chorionic gonadotropin (hCG) is a member of the glycoprotein family and consists of 2 subunits (α‐ and β‐chains) which are associated to the intact hormone.. Typically, in a healthy singleton pregnancy, the beta HCG level is about 100 mIU/ml about 16 days after ovulation, though this level can vary considerably. The levels are higher in multiple pregnancies; and lower in non-viable pregnancies and ectopic pregnancies.. Normal hCG levels in nonpregnant women are less than 10.0 mIU/mL. If your hCG levels are outside of the normal range, it could mean a variety of things. Your doctor will help you interpret the. The test identifies the amount of hCG in the mother's blood, expressed as an amount by milli-international units of hCG hormone per milliliter of blood (mIU/ml). How Physicians Interpret hCG Results . It is important to note that any single hCG test in early pregnancy does not tell much about the health of a pregnancy or fetus because individual women have a wide variation in hCG levels, and .