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
Snapshot of iron in circulation — must be interpreted alongside ferritin (storage), TIBC (binding capacity), and transferrin saturation (utilization) for a meaningful iron-status picture. Single serum iron alone is uninformative. Highly diurnal (peaks late morning) and affected by recent dietary iron — fasting morning draw recommended. Recent iron supplementation falsely elevates. Female users in reproductive years frequently run low. No direct peptide effects documented in common stacks. KEY INTERPRETATION: low iron + low ferritin = deficiency; low iron + high ferritin = anemia of chronic disease (inflammation); high iron + high ferritin + high saturation = potential iron overload (consider hemochromatosis screen).
Have a recent Serum iron 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.