Laboratory Services

PSA, Free and Total

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Updated Test Information:

Test Description
PSA, Free and Total
Synonym(s)
Free Prostate Specific Antigen, Free PSA, PSA Free/Total Ratio, PSA ratio, PSA Total and Free, PSA Free, Total PSA
Test ID
PSAFT
Specimen Type
Serum
Alternate Specimen Type
Red, Li‑heparin and K3‑EDTA
Specimen Requirements
SST
Minimum Sample Volume
1 mL
Pediatric Min. Volume (if applicable)
500 uL
Additional Processing Details
Separate serum or plasma from cells within 45 minutes of collection. If a red-top of plasma tube is used, transfer separated serum or plasma to a plastic transport tube.
Stability
5 days at 2‑8 °C
3 months at ‑20 °C (± 5 °C)
Methodology
Electrochemiluminescence Immunoassay “ECLIA”
Estimated TAT
0-2 Days
Testing Schedule
Monday - Saturday
Test Includes
Total PSA, Free PSA, and percent PSA free
CPT Code(s)
84153
84154
Reference Range

Male:
Total PSA: 0 - 4 ng/mL

% FPSA  % Prostate Cancer
0-10% 56%
10-15% 28%
15-20% 20%
20-25%  16%
>25% 8%
Performing Lab
Incyte Diagnostics
LOINC Code(s)
83112-3, 10886-0, 72576-2