SPSA - Specimen: Prostate-Specific Antigen (PSA) Screen, Serum

Test Catalog

Test Name

Test ID: SPSA    
Prostate-Specific Antigen (PSA) Screen, Serum

Specimen Type Describes the specimen type validated for testing


Necessary Information

Include patient's age.

Specimen Required Defines the optimal specimen. This field describes the type of specimen required to perform the test and the preferred volume to complete testing. The volume allows automated processing, fastest throughput and, when indicated, repeat or reflex testing.

Patient Preparation: For 12 hours before this blood test, do not take multivitamins or dietary supplements containing biotin or vitamin B7 that are 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. Red-top tube must be centrifuged and aliquoted within 2 hours of draw time.

2. Serum gel tube must be centrifuged within 2 hours of draw time.

Additional Information: Free prostate-specific antigen (PSA) can only be added to previously-submitted specimen within 12 hours of performing total PSA. Specimen must have been shipped frozen.


If not ordering electronically, complete, print, and send an Oncology Test Request Form (T729) with the specimen (http://www.mayomedicallaboratories.com/it-mmfiles/oncology-request-form.pdf)

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

0.4 mL

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


Mild OK; Gross reject


Mild OK; Gross OK





Specimen Stability Information Provides a description of the temperatures required to transport a specimen to the laboratory. Alternate acceptable temperatures are also included.

Specimen TypeTemperatureTime
SerumFrozen (preferred)180 days
 Refrigerated 5 days