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Test Code FRPSAT Prostate Specific Antigen, Free (Reflex only)

Important Note

Reflex test only!

This assay should only be used to calculate the ratio of free PSA to total PSA (percent free PSA).

Clinical Significance

Prostate cancer is the most common type of cancer found in men in the United States, with an incidence of approximately one case for every ten men. It is also the second leading cause of cancer deaths among American men.

Methodology

Two-site immunoenzymatic (Sandwich) assay (Beckman Coulter UniCel DxI)

Sample Type

Preferred Sample Type
Yellow top - Serum

 

Acceptable Sample Type
Red top - Serum

Specimen Minimum Volume

0.5 mL

Specimen Stability

Temperature Time
Ambient (18-25°C) 24 hours
Refrigerated (2-8°C) (store) 4 months
Frozen (-15 to -20°C) 1 year

Separate serum from cells within 2 hours.

Repeat freeze/thaw cycles do not effect assay

 

Reference Ranges

Normal Range
Not established

 

Technical Range
0.005 - 20 ng/mL

 

Rejection Criteria

Hemolysis N/A
Icterus N/A
Lipemia N/A

Availability

Performed STAT
24/7 No

Performing Laboratory

MultiCare Yakima Memorial Hospital Laboratory

Lab Department

Chemistry

CPT Code

84154

LOINC

10886-0 Free PSA [Mass/Vol]

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