Metabolic
HbA1c on TRT
What the number means, why it moves on a protocol, and how it sits with related markers.
What it is
HbA1c is the share of hemoglobin with sugar stuck to it. It averages blood sugar over about three months, so it does not swing with one meal.
The range
How to read the lab range
Under 5.7 percent (39 mmol/mol) is normal; 5.7 to 6.4 is prediabetes; 6.5 and up is diabetes. On TRT it can read a little low, because red cells turn over faster and donations replace old cells with new.
Why it moves on a protocol
- Growth hormone and secretagogues.
- Body fat, refined carbohydrate, poor sleep.
- Faster red-cell turnover on testosterone, and recent donations, lower it without blood sugar changing.
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
Can HbA1c be wrong on TRT?
It can read low. Anything that shortens red-cell life, including donations, lowers it. That is why it is read next to fasting glucose and insulin.
How fast does HbA1c change?
It reflects about three months, so a change shows fully after about that long.
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.