What the standard test misses, explained plainly.
The questions I am asked most often, answered properly. Each piece is written from the published evidence, and names its sources.
What ferritin level should a female athlete have?
No consensus number exists. What threshold the athlete research actually uses, what deficiency costs in performance, and where the ceiling sits.
Read it → Treatment · supplementationWhy your iron tablets aren’t raising your ferritin
Hepcidin, why a bigger dose does not mean more iron, what the alternate-day evidence really shows, and the causes worth ruling out.
Read it → Ferritin · reference rangesFerritin normal but still tired?
Why a result inside the reported range can still leave you exhausted, what that range actually measures, and what to ask for instead.
Read it → Diagnosis · IDNAIron deficiency without anaemia
You can be seriously iron deficient with a completely normal haemoglobin. The diagnosis most often missed, and how to advocate for a proper workup.
Read it →Not sure whether any of this applies to you?
The assessment walks through the risk factors and symptoms the research links to iron deficiency, and tells you whether a ferritin test is worth raising with your GP. Two minutes, free, and it does not diagnose anything.