LH
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.
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
Want to know where your numbers actually sit?
Every BioForge protocol starts from your own bloodwork. The first 15-to-30-minute call is free.