Human chorionic gonadotropin (hCG)

Test/Investigation

Human chorionic gonadotropin (hCG)

Site(s) or Laboratory offering Test/Investigation

NNUH, QEH, JPUH

Units

IU/L

Comments/Precautions

hCG is usually detectable 7-9 days after conception. Doubling time is 1.4-2.1 days in normal early pregnancy, but may be prolonged in ectopic pregnancy and threatened miscarriage.

Sample type

Serum or Heparin

Turnaround times (TAT) Urgent/Routine/GP or OPD

1 hour / 4 hour / by 8am next day

Reference intervals (adult unless stated)

Non-pregnant < 5 IU/L

If UKAS Accredited Test indicate at which site

Y NNUH, QEH

Source

Tietz Textbook of Clinical Chemistry