What is the normal hCG level at 4 weeks of pregnancy?

After conception, human chorionic gonadotropin (hCG) levels in the body gradually rise. So, what is the normal hCG level at four weeks of pregnancy?

What is the normal hCG level at four weeks of pregnancy?

At four weeks of gestation, serum hCG levels typically range from 9.70 ng/mL to 760.0 ng/mL. Between four and five weeks of pregnancy, serum hCG levels generally fall within 216.0 ng/mL to 7,137 ng/mL. Measuring hCG is a key indicator for confirming pregnancy. Under normal circumstances, hCG production begins shortly after implantation—around day six post-ovulation—when the trophoblast layer of the blastocyst forms. Plasma hCG may be detectable approximately one day later, and thereafter, hCG levels typically double every 1.8 to 2 days. By day 15 post-ovulation, hCG concentrations usually reach about 101 U/L. Serum hCG peaks between weeks 8 and 10 of gestation, after which levels decline rapidly. A decline—or failure to rise—in early-pregnancy hCG levels may indicate embryonic arrest or abnormal fertilization.

During early pregnancy, women should continue taking folic acid supplementation until the end of the third month of gestation. Avoid exposure to toxic or hazardous substances and pets. Use medications and vaccines cautiously; avoid any drugs known to impair fetal development. Pregnant women should modify unhealthy lifestyle habits—minimize late-night activity, and abstain from smoking and alcohol consumption.

Pregnant women are advised to maintain a balanced diet, avoid staying up late, engage in moderate physical activity, avoid excessive fatigue, and abstain from sexual intercourse. We hope this article has been helpful to you!