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Pregnancy Hormone Chart

Chart of hCG Hormone Ranges* During Human Pregnancy

The hCG hormone level in the human body doubles approximately every 2.2 days during the first trimester of pregnancy. Detectable levels of hCG start at 5 mIU/ml during the first week of gestation and rise to 100,000 mIU/ml at 2 to 3 months. Values decline to 10% to l5% of peak concentrations during 2nd and 3rd trimesters. In normal circumstances, first morning urine samples approximate serum hCG levels which reach 5 to 50 mIU/ml within one(1) week of gestational age.

HCG Levels during Pregnancy
After Conception Week of Pregnancy:
Normal HCG Levels: MIU/ML
1
5-50 (avg. 14)
2
5-50 (avg. 21)
3
5-50 (avg. 42)
4
10-425
5
19-7,340
6
1,080-56,500
7-8
7,650-229,000
9-12
25,700-288,000
13-16
13,300-254,000
17-24
4,060-165,400
25-40
3,640-117,000

The above table shows the typical ranges in hCG levels during pregnancy. *Statistically, the ranges are necessarily broad as each pregnancy cycle and hormone level is unique to the individual and extreme readings either way are possible in a very small percentage of pregnancies. However the table does clearly indicate the rapid increase in hCG hormone during the first trimester.