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HelpTest Code LAB3140 HCG Preg
Clinical System Name
HCG, Serum Pregnancy Test
Sample Requirements
Specimen: Whole Blood
Container(s): Gold SST, Red, Gold Microtainer
Preferred Vol: 3.0 mL
Minimum Vol: 0.5 mL
Notes: Method is affected by pregnancy status and certain tumors. Plasma is unacceptable specimen type.
Indeterminate results are reflexed to UW Laboratory STAT for HCG Quant (R/O Preg) testing.
Processing Instructions
Reject due to: Age of specimen, Insufficient Quantity, Wrong specimen type
Spin: Y
Aliquot: Y
Storage location: Core 5 Chemistry Refrigerator.
Off-site collection: Specify: "HCG-R/O Preg." Specimen should be centrifuged as soon as possible after collection. Spin blood and transfer serum to plastic tube and refrigerate or freeze. Serum may only be frozen and thawed ONCE prior to testing.
Stability
| Specimen Type | Temperature | Time |
|---|---|---|
| Serum | RT |
≤ 8 h |
| Serum | 2-8 C |
≤ 48 h |
| Serum | -20 C or -70 C |
≤ 6 m |
Availability
| STAT | Performed | TAT |
|---|---|---|
| Y | 24/7 Hospital Lab | 1 h |
| Y | 24/7 Reflexed indeterminate results | 2 h |
| Y | Reginal Clinic indeterminate results | 4 h |
Performing Laboratory
Seattle Children's Laboratory
Department
Department: Core Chemistry
Phone Number: 206-987-2617 (Client Services)
Methodology
Method: Immunochromatographic method for qualitative detection
Analytical Volume: 0.135 mL serum
Reference Range
| Pregnancy Confirmed | ≥ 10 mIU/mL |
Description
The serum hCG test is a rapid immunoassay for the qualitative detection of human chorionic gonadotropin (hCG) in urine or serum as an aid in the early determination of pregnancy. hCG is a glycoprotein hormone secreted by the developing placenta. After fertilization, the concentration of hCG rapidly rises in both the urine and serum of pregnant people, making the detection of hCG in these fluids an excellent marker for confirming pregnancy. The test utilizes monoclonal and polyclonal antibodies to hCG.
CPT Code
84703
Synonym
LAB3140
HCG Preg