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HCG Qualitative- Serum
Test CodeLAB144
Alias/See Also
HCGQL
CPT Codes
84703
Instructions
"Routine venipuncture
Collect one one 4.5ml Lt green top (lithium heparin) tube or one 5ml Red/gold top serum separator tube "
Collect one one 4.5ml Lt green top (lithium heparin) tube or one 5ml Red/gold top serum separator tube "
Specimen Stability
Refrigerate, stable 72 hours; stable 3 months if frozen.
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 24 hours
STAT: 1 hour"
STAT: 1 hour"
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.
Reference Range
"Negative
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."
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."
Additional Information
NCD Human Chorionic Gonadotropin (HCG)
