Magno
Vitamins & Minerals
Vitamin D (25-OH) on TRT
What the number means, why it moves on a protocol, and how it sits with related markers.
What it is
Vitamin D (25-OH) is the storage form measured in blood. It matters for bone, mood, immune function and testosterone production in men not on TRT.
The range
How to read the lab range
Labs call 20 to 30 ng/mL (50 to 75 nmol/L) sufficient; 40 to 60 ng/mL (100 to 150 nmol/L) is commonly quoted as a target. Above 100 ng/mL is more than anyone needs.
Why it moves on a protocol
- Indoor life, winter, darker skin.
- Body fat stores it away.
- Very low fat diets cut absorption.
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.
Read yours
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.
Questions people ask
Does vitamin D raise testosterone?
Correcting a deficiency can help in men making their own. On TRT it does not change the number much, but it still matters for bone and mood.
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.