Topical values for some haematological factors such as Hb and Ery as well as transferrin and ferritin were determined in 7 female blood donors and 8 male blood donors during the years of their work as blood donors. Subsequently, an iron resorption test was carried out which unexpectedly resulted in low rates of resorption ranging from 5.6% in men to 3.7% in women. After supplementing with vitaferro for 3 months the ferritin values which initially lay around the lower limiting value of 20 or 10 mg/l in men or women had doubled.
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