A quantitative hCG test (or beta hCG) measures the amount of hCG actually present in the blood. Guideline to hCG levels during pregnancy hCG levels in weeks from LMP (gestational age) * :. Hcg level chart by week of Gestational Age post LMP in hCG beta subunit IU/L: 2-3 weeks the HCG level is among 10-70 3-4 weeks the HCG level is among 10-750. Usually, the doctors will estimate what are normal HCG levels at 4 weeks pregnant. During the fourth week, the pregnant women may have just known that she is a pregnant. HCG is used in determining the pregnancy even before the pregnant woman starts to show any symptoms or signs of the pregnancy.. Human chorionic gonadotropin, or hCG, is a hormone produced during pregnancy in the cells of the placenta. Especially in early pregnancy, the amount of hCG present in the mother's body rises rapidly. In fact, it is the hormone detected in the urine by. At 4 weeks of pregnancy, or 2 weeks after ovulation, HCG levels in a normal pregnancy typically fall between 10 and 750 mIU/mL, according to the website Perinatology.com.. My doctor called and said my HCG Levels were 4000 for 4 weeks. I was just wondering if that seemed quite high? What were your levels? I read that levels for 4 weeks should be 5-426 for 4 weeks..