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Learn · Pituitary & Adrenal Signals

LH

Measured in mIU/mL

The pituitary's radio signal telling the testicles to make testosterone. It tells us where the failure is.

What the numbers mean

These are the ranges BioForge works to. They are not the same as a lab's reference range, which is built from the general population rather than from people who feel well.

Low
<1.5
Optimal
2–7
High
>9

What moves LH

Low T + low/normal LH = secondary (brain/pituitary side). Low T + high LH = primary (testicles themselves). Suppressed by opioids, anabolic steroids, obesity, sleep apnea, head trauma, pituitary tumors.

Related markers in Pituitary & Adrenal Signals

This page is educational and is not medical advice. Ranges are general and do not account for your history, medications or symptoms — a single number never decides a protocol. Your results are interpreted by a licensed clinician alongside everything else about you. Back to the Learning Center

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