6d • Prostate Basics
Iso PSA test - FDA approved in December 2025
If the words "elevated PSA" have been in any conversation in your house recently, this is worth knowing about.
A new blood test called IsoPSA was FDA-approved in December 2025. It does something the standard PSA test has always struggled with — it helps distinguish between a PSA reading that's high because of cancer, and one that's high for other reasons like an enlarged prostate or inflammation.
Why does that matter? Because right now, up to 75% of men who go for a prostate biopsy based on an elevated PSA come back with a negative result. That's a lot of invasive, stressful, expensive procedures that could potentially be avoided.
IsoPSA looks at the structure of the PSA protein — not just the level — to give doctors a clearer picture of whether a biopsy is actually needed. Early studies suggest it could reduce unnecessary biopsies by around 40–45%.
This isn't medical advice. Your doctor is the one who decides what's right for your situation. But if your PSA has come back elevated and you're facing the biopsy conversation, it might be worth asking: "Is IsoPSA something we should consider?"
Knowledge is armor. Ask the question.
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Iso PSA test - FDA approved in December 2025
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