What Is a Normal HCG Level for 4 Weeks Pregnant?
Human chorionic gonadotropin is a hormone produced by the cells of the placenta during pregnancy. HCG enters the bloodsteam when a fertilized egg implants into the uterus, usually about six days after fertilization.
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HCG Increases
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In most pregnancies, hCG levels double every 48 to 72 hours, peaking between eight and 11 weeks of pregnancy before beginning to decrease.
Average Levels
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At four weeks of pregnancy, calculating from the date of the last menstrual period, typical hCG levels range from 5 to 426 mIU/ml, according to American Pregnancy.
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Low Levels
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Low hCG levels can signal an impending miscarriage or ectopic pregnancy, but can also occur in a healthy, problem-free pregnancy.
High Levels
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High hCG levels may indicate a multiple pregnancy or a molar pregnancy but are not necessarily an indication of a problem or unusual circumstances.
Considerations
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Because of the wide variations from one woman to another, hCG is not usually used to date a pregnancy.
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