Секс, враки и ЖД - ферритин менее 50 должен быть общепринятым критерием дефицита железа для всех:
Studies have shown that 30%-50% of healthy women will have no marrow iron stores, so basing ferritin cutoffs on the lowest 2.5% of sampled ferritins is not appropriate. In addition, several lines of evidence suggest the body physiologic ferritin “cutoff” is 50 ng/mL.
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Hematology Am Soc Hematol Educ Program. 2023 Dec 8;2023(1):617-621.
Sex, lies, and iron deficiency: a call to change ferritin reference ranges
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