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Test Code PSA Prostate Specific Antigen, Total

Aliases

Total Prostate Antigen, tPSA

Patient Preparation

No special patient preparation required

Collection Method

Venous collection

Minimum Volume

  • Adults: 0.8 ml
  • Pediatric: 0.5 ml

Container

Lt Green / Plasma Separator / Lithium Heparin

Preferred Specimen

Light Green Top (lithium heparin) plasma

Acceptable Specimens

Serum:

  • Gold Top SST
  •  
  • Red Top


Plasma:

 

  • Light Geen Top (Lithium heparin)
  • Pink Top(K3 EDTA)

 

Reference or Target Ranges

0 – 4 ng/mL

Reportable Units

ng/mL

Critical Value

Not defined for this assay

Reasons for Rejection

 


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Hemolysis Threshold 2200 mg/dL
Icterus Threshold 65 mg/dL
Lipemia Threshold 1500 mg/dL
Other QNS, contaminated, improperly Labeled, improper specimen type

Specimen Stability

 


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Ambient 8 hours
Refrigerated (4°C to 8°C) 5 days
Frozen(-40°C to 0°C) 6 months

Performance Information

 


<!-- Performance information -->

 

Days and Time Performed 24/7
Expected Turn Around Time Routine: 4 hours
Stat Availability No
Performing Bench UH Chemistry
Methodology/Method Description Roche Cobas – Two site immunoenzymatic sandwich assay

Additional Information/Important Notes

PSA is also present in para-urethral and anal glands, as well as in breast tissue or with breast cancer, low levels of PSA can also be detected in sera from women.

CPT Codes

84153