Description
Free PSA
Sample Type:Serum
Tests Included:
Measurement of free PSA levels in the blood.
Sample Required:
Blood sample
Test Time:
Results are typically available within a few days.
Test Range Values:
Normal levels of free PSA are usually 0.1 to 0.9 nanograms per milliliter (ng/mL).
What is the test?
Free PSA is a form of prostate-specific antigen not bound to other proteins in the blood. This test measures the amount of unbound PSA, aiding in the assessment of prostate health.
Test Procedure:
A blood sample is drawn from a vein, and the concentration of free PSA is measured in the laboratory.
When to take the test:
This test is often used in conjunction with total PSA to help determine the risk of prostate cancer or other prostate-related conditions.
Who should take the test:
Men with symptoms like difficulty urinating, elevated PSA levels, or those at risk of prostate cancer might be recommended to take this test.
Precautions for exceptional cases (pregnancy, etc.):
This test is not applicable to pregnancy.
Frequently Asked Questions (FAQs) for Free PSA Test:
Q1: How does free PSA differ from total PSA?
A: Free PSA is unbound, while total PSA includes both bound and unbound forms. The ratio of free to total PSA helps assess the risk of prostate cancer.
Q2: Can benign conditions affect free PSA levels?
A: Yes, conditions like prostatitis or benign prostatic hyperplasia (BPH) can cause elevations in both free and total PSA levels.
Q3: What do elevated free PSA levels indicate?
A: Elevated free PSA levels might suggest a lower risk of prostate cancer, especially when compared to total PSA levels. It can help differentiate between benign and malignant prostate conditions.
Q4: Is this test solely for cancer diagnosis?
A: No, while it aids in assessing prostate cancer risk, it’s not solely a diagnostic tool. Further evaluations like biopsies might be needed based on the results and other factors.
Q5: Can dietary or lifestyle changes influence free PSA levels?
A: Some studies suggest that certain dietary and lifestyle modifications might impact PSA levels, but their direct influence on free PSA specifically is still under research.
*Please note that specific testing protocols and guidelines may vary based on the latest recommendations from health authorities and regulatory agencies. It is essential to consult healthcare professionals and follow local testing guidelines for accurate and appropriate testing.
