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HelpTest Code LAB2525 IsoPSA
Useful For
Early detection of prostate cancer in men over 50 who have elevated PSA level (>4 ng/mL).
Methodology
Immunoassay
Performing Laboratory
ClevelandDx
Specimen Requirements
Specimen Type: Plasma
Container/Tube: Light-green top (lithium heparin gel)
Specimen Volume: 1 mL
Specimen Minimum Volume: 0.5 mL
Specimen Transport Temperature
Frozen
Specimen Stability
| Specimen Type | Temperature | Time |
|---|---|---|
| Plasma | Refrigerated | 24 hours |
| Frozen | 14 days |
Special Instructions
Only collect from male patients ≥ 50 years of age with an established total PSA level of ≥ 4 ng/mL
Do not collect specimens:
• Within 72 hours after prostate manipulation, including digital rectal exam (DRE)
• Within 2 weeks after urinary tract infection and/or prostatitis
• Within 30 days after prostate surgery including prostate biopsy; urinary catheterization, prostate infarction, or endoscopic evaluation
• From patients with previous urinary tract malignancy
Reference Values
Risk threshold: IsoPSA Index > 6.0 for men 50 years or older
Day(s) Performed
Monday through Friday
CPT Code Information
0359U