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Table 3 Concentration of total hCG and in 4246 urine samples from 574 women having term pregnancies measured using the Siemens Immulite 1000 total hCG assay.

From: Biological functions of hCG and hCG-related molecules

Gestation age (weeks since start of menstrual period) N Median Total hCG ng/ml Range Total hCG ng/ml (variation) Variance
3-weeks-3-weeks 6-days n = 574 0.24 (255 of 574 <0.1 ng/ml) 0 - 415  
4 weeks-4 weeks 6-days n = 574 21.7 (20 of 574 <0.1 ng/ml) 0 - 213  
5 weeks-5-weeks 6-days n = 574 301.2 2.3 - 4,195 1839X
6-weeks-6-weeks 6-days n = 574 1,472 14.1 - 24,580 1743X
7 weeks-7 weeks 6-days n = 574 4,795 93.1 - 28,370 305X
8 weeks-8 weeks 6-days n = 574 6,813 124.5 - 42,120 338X
9 weeks-9 weeks 6-days n = 65 8,869 134.5 - 54,530 405X
10 weeks-10 weeks 6-days n = 45 9,864 123.4 - 60,130 487X
11 weeks-13-weeks 6-days n = 74 1,984 179.3 - 49,540 276X
14 weeks-17 weeks 6-days n = 494 768.8 58.5 - 8,411 143X
18 weeks-26-weeks 6-days n = 74 506.3 84.0 - 2,643 31.5X
27 weeks-40 weeks 6-days n = 50 522.4 66.1 - 1,873 28.3X
  1. Data from a further 97 pregnancies that failed (miscarriage) were excluded from this table. Pregnancies which failed to implant in early pregnancy (total hCG <0.1 ng/ml) are indicated in parenthesis.