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Blood Sciences

Blood Test Information

HCG (Ectopic)
(a.k.a Human Chorionic Gonadotrophin)
minimum sample volume required ~ 5ml

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Test Code: HCE

Tube type: SST

Special instructions
Details of pregnancy test result and Ultrasound scan required for test to be performed - see Gynae protocol.

Time limit for add on
3 days post collection

Reference range


Turnaround Time
1 day

Department: Biochemistry

Clinical Application
hCG is produced in the placenta during pregnancy. The biological action of hCG serves to maintain the corpus luteum during pregnancy. It also influences steroid production. The serum of pregnant women contains mainly intact hCG. Measurement of the hCG concentration permits the diagnosis of pregnancy just one week after conception. The determination of hCG in the 1st trimester of pregnancy is of particular importance. Elevated values here serve as an indication of chorionic carcinoma, hydatiform mole or multiple pregnancy. Depressed values indicate threatening or missed abortion, ectopic pregnancy, gestosis or intra-uterine death.


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