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
Average red blood cell size. Low MCV (microcytic) = iron deficiency anemia, thalassemia, anemia of chronic disease (long-standing). High MCV (macrocytic) = B12 deficiency, folate deficiency, alcohol use, hypothyroidism, certain medications. Most common peptide-user pattern: high MCV from heavy alcohol use (paired with high GGT) or from B12/folate insufficiency. No direct peptide effects in common stacks. KEY INTERPRETATION: order MCV alongside iron studies + B12 + folate when investigating any anemia or fatigue presentation; MCV pattern narrows the differential dramatically.
Have a recent MCV (mean corpuscular volume) 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.