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Table 2 Concentration of total hCG and hyperglycosylated hCG (hCG-H) in 496 serum samples from 310 women with 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) Median HCG-H ng/ml Range hCG-H ng/ml (variation) hCG-H %
3-weeks-3-weeks 6-days n = 42 0.26 (16 of 42 <0.1 ng/ml) 0.04 - 5.5 0.20 (16 of 42 <0.1 ng/ml) 0.01 - 6.45 87%
4 weeks-4 weeks 6-days n = 42 3.4 0.21 - 173 (824X) 2.5 0.18 - 160 (888X) 51%
5 weeks-5-weeks 6-days n = 67 65 1.86 - 1308 (704X) 8.6 0.96 - 698 (731X) 43%
6-weeks-6-weeks 6-days n = 29 252 3.80 - 855 (225X) 86 0.76 - 629 (827X) 36%
7 weeks-7 weeks 6-days n = 30 3,278 203 - 7,766 (38X) 359 27 - 931 (34X) 16%
8 weeks-8 weeks 6-days n = 33 4,331 1,064 - 10,057 (9.4X) 386 67 - 1050 (15.6X) 7.0%
9 weeks-9 weeks 6-days n = 24 5,832 1,031 - 11,586 (11.2X) 430 102 - 1158 (11.3X) 5.1%
10 weeks-10 weeks 6-days n = 20 10,352 1,952 - 19,958 (10.2X) 521 188 - 1855 (9.9X) 4.3%
11 weeks-13-weeks 6-days n = 41 5,953 1,440 - 15,318 (10.6X) 137 24 - 330 (13.7X) 2.3%
14 weeks-17 weeks 6-days n = 57 2,934 311 - 4,757 (15.2X) 26 6.7 - 129 (19.3X) 1.3%
18 weeks-26-weeks 6-days n = 62 1,931 210 - 6,223 (30.3X) 15.8 5.3 - 95 (17.9X) 0.65%
27 weeks-40 weeks 6-days n = 49 1,911 184 - 8,530 (46.4X) 2.95 0.3 - 12.2 (40.6X) 0.14%
  1. Data from 50 pregnancies that failed due to miscarriage were excluded from this table. Pregnancies which failed to implant in early pregnancy (total hCG <0.1 ng/ml) are indicated in parenthesis.