- YPSTFR
PSA Total & Free
Specimen:
Test Code
YPSTFR
Specimen Name
PSA Total & Free
Collect
SST; Also Acceptable: Plain Red Top
Submit
1 mL (Min: 0.3 mL) Serum, Refrigerated (Frozen if >24 hours)
Special Handling
The specimen should be allowed to clot before centrifugation. Centrifuge the specimen and remove serum or plasma from the cells with 3 hours of collection. If collecting a red top tube, serum should be separated from the cells promptly to an appropriately labeled transfer tube.
Rejection Criteria
—
Stability
Refrigerated 24 hours; Frozen 5 months
Methodology
Instrument: Beckman Coulter DxI 9000
Performed
Tuesday/Friday
Reported
2-7 days
CPT Codes
- 84153
- 84154
Components
—
Additional Information
Specimens for PSA testing should be drawn prior to such prostatic manipulations as digital rectal exam (DRE), prostatic massage, transrectal ultrasound (TRUS) and prostatic biopsy. DRE may cause transient increase in serum PSA levels. A repeat PSA measurement in the case of borderline elevation has been recommended. Transrectal needle biopsy has also been shown to cause persisting PSA elevations. Thus, a 6 week waiting period between needle biopsy and PSA sampling has been recommended.
Disclaimer:
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Test Information
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Common Test Phrases
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Common Lab Definitions
- Serum
- Plasma
- STT