Prostate-Specific Antigen (PSA), Free and Total

Message

Serum for free PSA determinations should be drawn before performing prostatic manipulations.

Specimen stability updated 4/9/2024.

Test Code

PSAFT

Alias/See Also

Epic: LAB171

CPT Codes
84153, 84154

Includes

PSA, Total
PSA, Free
PSA, Free/Total Ratio

Preferred Specimen

Specimen Type: Serum
Collection Container: Serum gel
Specimen Volume: 3 mL

Minimum Volume

1.0 mL

Instructions

Collection Instructions: Centrifuge and separate cells after clot formation and within 3 hours of collection. Remove serum if testing will be delayed more than 3 hours.

Additional Information: Serum for free PSA determinations should be drawn before performing prostatic manipulations.

Transport Container

Plastic vial

Specimen Stability

Room temperature: Unacceptable
Refrigerated (on gel): 24 hours
Refrigerated (off gel): 24 hours
Frozen: >24 hours

Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)

Samples stored on gel >3 hours, unlabeled, mislabeled, wrong tube type, hemolyzed, QNS, exceeds specimen stability requirements.

Methodology

Chemiluminescent microparticle immunoassay (CMIA)

Setup Schedule

Daily

Report Available

Same day

Reference Range

PSA, Free: 0.0 - 2.5 ng/mL
PSA, Total: 0.0 - 4.0

Performing Laboratory

Inova Laboratories

2832 Juniper Street

Fairfax, VA 22031

Last Updated: April 9, 2024
Last Review: N. Wolford, March 8, 2023

The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.