Hormones

Testosterone, total

Measured in ng/dL · LOINC 2986-8

Reference ranges

Optimal

600 – 900 ng/dL

functional-medicine target

Standard

264 – 916 ng/dL

lab reference range

Optimal ranges are tighter than standard lab ranges and reflect functional-medicine targets, not the populations they were derived from. Reference bands depend on sex, age, and circumstance — Juno's lab analysis layers your profile context onto the printed range when you paste a value.

Peptide relevance

BPC-157 + TB-500 have no documented effect on testosterone in human studies. CJC-1295 + Ipamorelin (GHRP) modestly raise IGF-1 but no consistent testosterone effect. Tesamorelin is a GHRH analog (IGF-1 axis, not HPG axis). Tirzepatide / Semaglutide (GLP-1) — modest fat loss can raise free testosterone in men with obesity; total T effect is variable. Direct exogenous testosterone (TRT) elevates total T and may suppress LH/FSH; not a peptide. Range above is for adult males 30-49; adult females and older men have different reference bands.

Peptides that influence this marker

Documented to affect this marker. Click through for the full evidence-tiered profile.

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