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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.