PSA Screen for Adults, 50 Years and Older
| Abbrev Code: | PSA50 | ||
| Order Code: | LAB3696 | Order Name: | Prostat Spec Antigen Screen |
| Methodology: | Roche: Electrochemiluminescence immunoassay (ECLIA)
Vista: Chemiluminescence |
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| CPT Codes: | G0103 x1, B0103 x | ||
| Turnaround Time: | Varies by site. | ||
| Associated Links: | |||
Collection Instructions
| Specimen: | Blood |
| Optimal Volume: | 2.5 mL |
| Minimum\Peds Volume: | 0.6 mL |
| Collection Instructions: | Chemistry Tests Containers Chart |
| Contraindications: | Large doses of biotin (10 mg or more per day) may cause clinically significant interference in PSA tumor marker levels. If interference is suspected, it is strongly recommended that biotin is discontinued for at least one week prior to retesting. |
Processing and Shipping
| Specimen Processing: | Centrifuge and aliquot within 4 hours of collection, 1.25 mL, 0.2 mL minimum. Store in refrigerator. |
| Shipping Instructions: | Ship at refrigerated temperature to arrive within 5 days. |
| Stability: | Roche: 24 hours at room temperature; 5 days refrigerated; 6 months frozen.
Vista: 7 days refrigerated; 4 months frozen at -80°C. |
| Test Performed at or Referral Lab | Chemistry (CSC Maple Grove, Roche-CSC Mpls, Roche-Grand Itasca, Roche-Lakes, Roche-Northland, Roche-Range, Roche-UMMC East) |
Interpretive
| Reference Range: | Vista: 0-4 ug/L
Roche:
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| Use: | Elevated in many patients with prostate cancer, as well as in some patients with prostatic hypertrophy. |
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