Main Content

Protein, Total

Test Name:Prostatic Specific Antigen, Total (PSA)
Epic Order Code:LAB116
CPT Code:84153  
Specimen(s) Type:Serum; 1.0 mL
Acceptable Container(s):Tube top is gold.
Testing Schedule:Monday-Friday
Turn Around Time:STAT: NA
 Routine: 1-3 days
Collection Information:No special patient preparation is required. Obtain specimen by standard collection procedures.
Transport Information:Deliver to lab immediately. All specimens must be signed into the laboratory.
Reference Clients:If unable to deliver to the lab within 1 hour, centrifuge the specimen and remove serum from the red cells. Store and transport at 2-8° C. Specimen must be received in the lab within 24 hours. If longer storage is required, store and transport the sample at -20° C for up to 30 days.
Causes for Rejection:Improperly labeled, incorrect container, contaminated, insufficient quantity, incorrect/delay in transport, gross hemolysis.
Reference Range:< 4.00 ng/mL
Additional Information:Hormonal therapy may affect PSA expression; therefore, a low PSA level after any treatment that includes hormonal therapy may not adequately reflect the presence of residual or recurrent disease.
 Active free PSA in the serum at the time of blood sampling can continue to complex with serum protease inhibitors, especially alpha-2-macroglobulin, resulting in a rapid decrease in PSA levels of the active form of free PSA.