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Prostate Specific Ag
MessageThis electrochemiluminescence immunoassay is performed on a Roche Cobas e411. Different testing methods should not be used interchangeably, particularly in serial monitoring, as results can vary due to differences in assay methods or reagent specificity.
Test Code
LAB116
Alias/See Also
Equal Molar PSA; PSA
Preferred Specimen
SST
Instructions
Collect one 5ml yellow top SST tube
Collect in SST. Centrifuge within 2 hours of collection
Refrigerate within 8 houRS.
Collect in SST. Centrifuge within 2 hours of collection
Refrigerate within 8 houRS.
Specimen Stability
5 days at 2-8o
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Failure to follow proper collection or storage procedures
Methodology
Electrochemiluminescence immunoassay
Setup Schedule
Daily
Report Available
Within 24 hours of report run
Limitations
Biotin >80ng/mL can lead to falsely depressed total PSA, wait at least 8 hours following the last biotin dose.
Reference Range
<4.0 ng/mL
Additional Information
NCD-ABN Prostate Specific Antigen
