HCG Qualitative- Serum

Test Code

LAB144

Alias/See Also

HCGQL

CPT Codes
84703

Preferred Specimen

Heparinized plasma (preferred) or serum (SST). Centrifuge within 2 hours of collection
Refrigerate within 8 hours.

Instructions

"Routine venipuncture
Collect one one 4.5ml Lt green top (lithium heparin) tube or one 5ml Red/gold top serum separator tube "

Transport Temperature

Send Refrigerated (2-8C)

Specimen Stability

Stable refrigerated for 3 days.

Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)

Insufficient quantity; failure to follow stability requirements

Methodology
Immunometric: The amount of HRP conjugate bound is directly proportional to the concentration of hCG present.

Setup Schedule

Daily/STAT

Report Available

Within 12 hours STAT: 3 hours

Limitations

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. 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.

Performing Laboratory
CH CHOMP HOSPITAL LAB (831-625-4811): CH CHEMISTRY

The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.