Laboratory Services

PSA, Total with Reflex to PSA, Free

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Updated Test Information:

Test Description
PSA, Total with Reflex to PSA, Free
Synonym(s)

Free Prostate Specific Antigen, Free PSA, PSA Free/Total Ratio, PSA ratio, PSA Total and Free, PSA Free, Total PSA

Test ID
PSAR
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 with reflex to Free PSA

CPT Code(s)

84153, 84154 if necessary

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%
Reflex Conditions

Will reflex to Free PSA if the total PSA is between 4 ng/mL and 10 ng/mL

Performing Lab

Incyte Diagnostics

LOINC Code(s)

83112-3