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Free PSA

Order Code CH141
Turnaround Time 24-48 hours
Test Includes

Free PSA

Specimen Requirements
Specimen Source
Transport Container
(Specimen Container)

SST (Tiger Top)

Preferred Specimens
Collection Instructions
(Transport Temperature)
Transport Refrigerated (cold packs)
Specimen Stability
Temperature Period
Room temperature Unacceptable
Refrigerated 5 days
Frozen 30 days
Test Details
Immunoassay (IA
Clinical Significance

The percentage of measured prostate-specific antigen (PSA) existing in the free form (free:total PSA ratio) is useful in assessing the risk of prostate cancer in patients with borderline or moderately increased total PSA (4.0-10.0 ng/mL) and has been used to help select men who should have follow-up prostate biopsy.

Reference Ranges

≤ 0.86 ng/mL