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
Red blood cell magnesium reflects intracellular magnesium status — far more useful than serum magnesium (which the body tightly regulates and which only drops when reserves are severely depleted). Insufficient magnesium is one of the most common nutritional shortfalls in adults and contributes to muscle cramps, sleep issues, glucose intolerance, and elevated blood pressure. No direct peptide effects in common stacks. Magnesium supplementation (glycinate, malate, or threonate forms — NOT oxide, which is poorly absorbed) is often a low-cost win for peptide users running aggressive protocols. KEY INTERPRETATION: serum magnesium is uninformative for early deficiency; RBC is more sensitive. Functional magnesium status also reflects in red cell distribution width (RDW), neuromuscular irritability, and pulse rate variability.
Have a recent Magnesium, RBC 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.