PROSTATE SPECIFIC ANTIGEN; PSA FREE

What this test checks

Measures the 'free' (unbound) form of PSA. Combined with total PSA, helps distinguish cancer from benign prostate enlargement.

Why do people get this test?

Used when total PSA is in a grey zone.

When you should consider this test

• Borderline elevated total PSA
• Detailed prostate evaluation
• Urologist requested

How to prepare

Avoid ejaculation and bike riding 48 hours before.