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HelpTest Code SPREG Pregnancy Test Serum
EHR Test Codes
| Test Code | Test Name | |
| Atlas | SPREG | Pregnancy Test, Serum |
| Cerner | SPREG | Pregnancy Test, Serum |
Specimen Requirements
Preparation of Patient:
None
Container Type:
Green Top 5mL Lithium Heparin Separator Tube
Or
Gold Top 6mL SST Gel & Clot Activator Tube
Specimen Type:
Plasma or Serum
Specimen Volume:
2.5 mL Plasma or Serum minimum .5 mL
Specimen Handling/Transport:
Separate plasma or serum from cells within 2 hours of collection.
Transport ambient room temperature.
Specimen Stability/Storage:
2 days refrigerated 2-8°C
>2 days frozen -20°C
Performing Laboratory
Munson Healthcare Laboratories
Chemistry Department
Priority, Frequency, & Turnaround
Priority:
STAT, ASAP, Non-Emergent
Frequency:
24 hours 7 days a week
Turnaround:
0 - 1 days
STAT 60 minute from receipt in lab
Methodology
Chemiluminescent Immunoassay
Reporting
Reference Range:
| 0 - 5 mIU/mL | Negative |
| 6 - 24 mIU/mL | Equivocal |
| > 25 mIU/mL | Positive |
Equivocal result will reflex quantitative hCG.
Critical Decision:
None
Clinical Significance
Serum specimens from healthy men and non-pregnant women should not contain detectable levels of HCG.
Because of the sensitivity of the assay, specimens tested as positive during initial days after conception may later be negative due to the natural termination of the pregnancy. Natural termination occurs in 22% of clinically unrecognized pregnancies and 31% of pregnancies overall. HCG levels of 25mlU/ml have been observed as early as 7 to 10 days after conception, so HCG may be detected before a first missed menses.
The presence of HCG in serum does not always indicate pregnancy. Adenocarcinoma of the stomach, pancreas and ovary, hepatomas, choriocarcinoma and hydatidiform mole are tumors most commonly associated with ectopic HCG secretion.
CPT Code(s)
84702