Reference ranges
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
No direct peptide effects documented for any of the common stack peptides (BPC-157, TB-500, CJC/Ipamorelin, Tesamorelin, GLP-1 agonists). Vitamin D affects many other things (immune function, bone density, mood, testosterone synthesis indirectly), so a deficient or low-optimal value is worth surfacing as a baseline-health item. Seasonal variation is expected (lower in winter at higher latitudes). Supplementation typically needed at 1000-5000 IU/day to reach optimal range.
Peptides that influence this marker
Documented to affect this marker. Click through for the full evidence-tiered profile.
Have a recent Vitamin D, 25-OH value?
Paste it on the lab analysis page. Juno reads your active stack + (if shared) your medications and conditions, and surfaces plausible contributors with citations. Doesn't diagnose.
Sign-in required. The analysis is saved to your private history and audit-logged.