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Prostate Specific Antigen, Free
| Item | Value | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Test Update Information | Free PSA method changed fromSiemens Immulite 2000 to the Abbott Architect i2000 on March 25, 2013 | ||||||||||||
| Approval req'd? | Yes, contact Chemistry at x3-4820 for patients whose total PSA level is < 2.5 or > 10.0 ug/L. | ||||||||||||
| Available Stat? | No | ||||||||||||
| Utilization Guidelines | Although generally recommended for patients with Total PSA values between 4.0-10.0 µg/L the laboratory will accept requests for patients with Total PSA as low as 2.5 µg/L without approval. | ||||||||||||
| Test code | FPSA | ||||||||||||
| Test group | PSA | ||||||||||||
| Performed by | China Basin Chemistry | ||||||||||||
| In House Availability | Monday(day shift) | ||||||||||||
| Method | Chemiluminescent Immunoassay (Abbott Architect i2000) | ||||||||||||
| Container type | Gold top | ||||||||||||
| Amount to Collect | 2 mL blood | ||||||||||||
| Sample type | Serum | ||||||||||||
| Preferred volume | 1 mL serum | ||||||||||||
| Min. Volume | 0.5 mL serum | ||||||||||||
| Processing notes | Freeze serum at -20C | ||||||||||||
| Units | % | ||||||||||||
| Normal range | See Additional Information | ||||||||||||
| Synonyms | Free PSA | ||||||||||||
| Turn around times | 1-8 days | ||||||||||||
| Additional information | Includes PSA, Total. Medicare Local Medical Review Policy 9718, published in CA Medicare Bulletin 98-2 (February, 1998), applies. Use of the test is based upon the claim of Catalona et al (JAMA 1995;274:1214) that when PSA levels are in the range of 4.1-10.0 µg/L, a higher proportion of free PSA identifies the patient with a relatively lower likelihood that a biopsy will show cancer. In patients with Total PSA of 4-10 µg/L:
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| CPT coding | 84153 | ||||||||||||
| Medical Necessity? | Yes. Click here for more information | ||||||||||||
| LOINC code | 12841-3 | ||||||||||||
| Last Updated | 4/3/2013 3:01:40 PM | ||||||||||||
| Entry Number | 788 |
If you have additional questions regarding this test, please call: 415-353-1667