Test Catalog

Test ID: PSAU    
Prostate-Specific Antigen (PSA) Ultrasensitive, Serum

Specimen Type Describes the specimen type validated for testing


Additional Testing Requirements

Free prostate-specific antigen (PSA) can only be added on within 12 hours of performing this test. Specimen must have been shipped frozen. Call 800-533-1710 if wanting to order PSAFT / Prostate-Specific Antigen (PSA), Total and Free, Serum instead.

Necessary Information

Include patient's age.

Specimen Required Defines the optimal specimen required to perform the test and the preferred volume to complete testing

Patient Preparation: For the 12 hours before specimen collection, do not take multivitamins or dietary supplements containing biotin (vitamin B7), which is commonly found in hair, skin, and nail supplements and multivitamins.

Collection Container/Tube:

Preferred: Serum gel

Acceptable: Red top

Submission Container/Tube: Plastic vial

Specimen Volume: 0.6 mL

Collection Instructions:

1. Serum gel tubes should be centrifuged within 2 hours of collection.

2. Red-top tubes should be centrifuged and the serum aliquoted into a plastic vial within 2 hours of collection.

Specimen Minimum Volume Defines the amount of sample necessary to provide a clinically relevant result as determined by the Testing Laboratory

0.4 mL

Reject Due To Identifies specimen types and conditions that may cause the specimen to be rejected

Gross hemolysis Reject
Gross lipemia OK

Specimen Stability Information Provides a description of the temperatures required to transport a specimen to the performing laboratory, alternate acceptable temperatures are also included

Specimen TypeTemperatureTimeSpecial Container
SerumFrozen (preferred)180 days
 Refrigerated 5 days