Function Health testosterone results: What “out of range” really means and what to do next
Dr. Susan Carter, MD: Endocrinologist & Longevity Expert
Feb 09, 2026 · 13 min read
An “out of range” testosterone result means your value fell outside that lab’s reference interval, not that you have hypogonadism. The next step is to repeat a morning total testosterone and add confirmatory labs (free testosterone with SHBG, plus LH/FSH) interpreted alongside symptoms before deciding on treatment. “When a lab report says ‘normal’, it mostly ...