Test Code hCG Quant HCG Quantitative Blood

Important Note

This orderable is not for testing specimens for male patients.

If testing for gestational trophoblastic disease (GTD), testicular tumors, ovarian germ cell tumors, teratomas, and, rarely, other human chorionic gonadotropin (hCG)-secreting tumors is required refer to Beta-Human Chorionic Gonadotropin, Quantitative, Serum

Additional Codes

Cerner	NextGen
HCG Quantitative Serum	HCG Quantitative Serum
HCG Quantitative Blood

Alternate Name(s)

β-hCG

Beta Human Chorionic Gonadotropin

Quantitative Pregnancy

Useful For

The detection of hCG in urine or blood within 3-4 weeks of the last menstrual period is the most reliable indicator for the confirmation of pregnancy. β-hCG is initially secreted by the trophoblast, and later by the chorion and placenta. Levels rise exponentially to a peak during the first trimester, declining to a plateau during the second and third trimesters. Measurement of hCG has also been applied in the diagnosis of ectopic pregnancy, threatened abortion, and multiple gestation.

Methodology

Immunometric (Chemiluminescence)

Patient Preparation

None

Collection Instructions

Standard phlebotomy practices.

Specimen Requirements

Container

Specimen Type	Tube
Lithium Heparin Plasma
PST	or or
Serum	or
SST	or or

Stability

Storage	Temperature	Stability
Room Temperature	18-28°C	Not recommended
Refrigerated	2-8°C	≤ 5 days
Frozen	≤-20 °C	4 weeks Thaw 1 time only

Rejection Criteria

Gross Hemolysis

Result Reporting and Reference Values

Reported in Units/L

Most Likely Not Pregnant (Negative)	0 - 5
Pregnant (Positive)	≥ 25

Approximate Gestational Age in weeks.	Approximate hCG Range
Non Pregnant female	<5.0
1-10	64 - 150,854
11-15	11,795 - 151,996
16-22	9,384 - 61,410
23-40	1,737 - 98,576

Reflex Testing