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Concentrations of hCG, beta-hCG, and c-beta-hCG in serum and urine of females

	Median		90th percentile		97.5 percentile
	<50 years	≥50 years	<50 years	≥50 years	<50 years	≥50 years
Serum (pmol/L)
hCG	<0.8	3.7	3.4	10.6	8.6	15.5
beta-hCG	<0.3	0.5	1.0	1.2	1.6	2.0
Total hCG*	0.8	4.3	4.1	11.3	9.0	17.0
Urine (pmol/L)
hCG	<0.8	1.7	3.3	8.2	8.8	11.5
beta-hCG	<0.3	0.6	1.0	1.8	1.7	4.3
c-beta-hCG	0.7	1.6	2.7	6.4	8.1	9.5
Total hCG*	1.8	4.6	5.5	15.4	13.6	20.4
Urine (pmol/mmol)
hCG/creatinine	<0.10	0.24	0.37	0.88	0.82	1.34
beta-hCG/creatinine	<0.06	0.07	0.12	0.28	0.24	0.64
c-beta-hCG/creatinine	0.07	0.23	0.21	0.93	0.51	1.25
Total hCG/creatinine*	0.20	0.63	0.78	2.06	1.31	2.92

hCG: human chorionic gonadotropin.

* Results for total hCG immunoreactivity were calculated as the sum of the concentration in individual samples.

Republished with permission of the American Association for Clinical Chemistry, from: Alfthan H, Haglund C, Dabek J, Stenman UH. Concentrations of human choriogonadotropin, its beta-subunit, and the core fragment of the beta-subunit in serum and urine of men and nonpregnant women. Clin Chem 1992; 38(10):1981; permission conveyed through Copyright Clearance Center, Inc. Copyright © American Association for Clinical Chemistry 1992. All rights reserved.

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