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Iron deficiency — UKMLA MCQ

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ModerateMedical Conditions in SportIron deficiencyUKMLA

A 17-year-old endurance runner has fatigue, declining interval performance and heavy menstrual bleeding. Ferritin is low while haemoglobin remains within the reference range. What is the most likely diagnosis?

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Correct answer: E — Iron deficiency without anaemia

Low ferritin with normal haemoglobin is consistent with iron deficiency without anaemia. It can impair wellbeing and endurance performance before anaemia develops. Heavy menstrual bleeding and dietary intake should be assessed.

Reference: NICE; FSEM