Nutrition and Labs
Iron, ferritin, vitamin D, B12, protein and the numbers on a standard panel. What the reference ranges mean, why normal is not the same as optimal for every marker, and how to read your own results well enough to ask a useful question at your next appointment.
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Normal hemoglobin, low ferritin: why heavy periods hide iron deficiency
Yes. Iron depletion runs in stages and hemoglobin falls last. Storage iron goes first, which ferritin measures. Transport iron goes next, which transferrin saturation measures. Only then does…
September 8, 2026 · 7 min read