Prostate-Specific Antigen (PSA), Free

CPT Code(s):

84154

Methodology:

Chemiluminescent immunometric assay

Performed:

Monday - Friday

Reported:

Within 3 days

Use:

The free prostate-specific antigen percentage is an aid in distinguishing prostate cancer from benign prostatic conditions in men age 50 and older with a total PSA between 3 and 10 ng/mL and negative digital rectal examination findings. Prostatic biopsy is required for the diagnosis of cancer.

Specimen Requirements:

Collect blood by venipuncture into an SST/gold-top tube . For serum, allow the specimens to clot at room temperature. Separate the serums from the cells, using a refrigerated centrifuge and avoid hemolysis. If possible, keep specimens cold (2 - 8°C).

Stability (collection to time of analysis/testing):

  • Refrigerated (2 - 8°C): 48 hours
  • Frozen (-20°C): Indefinitely

Collection Procedure:

-

Reference Values:

< 0.7 ng/mL

Interpretation Data:

-

Notes:

-

Reported Notes:

-

Result:

-