Magno

Kidney & Electrolytes

eGFR on TRT

What the number means, why it moves on a protocol, and how it sits with related markers.

Updated 2026-11-08 · Part of the Magno guides

What it is

eGFR estimates how well the kidneys filter, calculated from creatinine, age and sex. It is only as good as the creatinine that feeds it.

The range

How to read the lab range

Above 90 is normal; 60 to 89 is mildly decreased on paper and normal for many adults; under 60 on two tests is kidney disease.

Why it moves on a protocol

How Magno reads it

Magno keeps every test on one line, against your lab's range, with the change since last time. Pro explains it in plain words. Get Magno for iPhone.

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Drop your lab PDF or a photo and get every marker explained in plain words. Free, no account, your file never leaves your browser. Track it in the iPhone app to see the change since your last test.

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Questions people ask

eGFR 75 on TRT, is that a problem?

Often not. Creatine and muscle mass can explain much of it. Cystatin C gives a second view that ignores muscle.

Related markers

Not medical advice

This explains what the number is and why it moves. It is not medical advice; decisions belong to you and your clinician.