Prostate-specific Antigen (PSA), Free:Total Ratio Reflex (Serial Monitor)
Use
The Prostate-specific Antigen (PSA), Free:Total Ratio Reflex test is used for serial monitoring in prostate cancer management. It measures levels of PSA in the serum, which is a protein produced by prostate cells. Monitoring the levels of total and percent free PSA can help in evaluating the presence or progression of prostate cancer. A decrease in PSA levels post-radical prostatectomy is expected, and an elevation could indicate biochemical recurrence.
Special Instructions
Not provided.
Limitations
Values obtained with different assay methods or kits cannot be used interchangeably. Results cannot be interpreted as absolute evidence of the presence or absence of malignant disease. The test results are influenced by various factors, including assay variability and patient-specific factors.
Methodology
Immunoassay (ECLIA)
Biomarkers
LOINC Codes
- 2857-1 - PSA SerPl-mCnc
- 2857-1 - PSA SerPl-mCnc
- 10886-0 - PSA Free SerPl-mCnc
- 12841-3 - PSA Free MFr SerPl
Result Turnaround Time
1-3 days
Related Documents
For more information, please review the documents below
Specimen
Serum
Volume
Not provided
Minimum Volume
Not provided
Other tests from different labs that may be relevant