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  • Title: Prevalence, risk factors, and ferritin testing to mitigate iron depletion in male plateletpheresis donors.
    Author: Spencer BR, Haynes JM, Notari EP, Stramer SL.
    Journal: Transfusion; 2020 Apr; 60(4):759-768. PubMed ID: 32073674.
    Abstract:
    BACKGROUND: Most single-donor platelet (SDP) donors transition to plateletpheresis after prior red blood cell (RBC) donation. Recruitment may follow identification of a high platelet count, a marker associated with iron depletion (ID). SDP donors may have underrecognized risk for iron depletion. STUDY DESIGN AND METHODS: To assess the prevalence of ID, we performed ferritin testing on male plateletpheresis donors with hemoglobin levels less than 13.5 g/dL. Multivariable logistic regression identified risk factors for low ferritin (LF; ferritin ≤26 ng/mL) and absent iron stores (AIS; ferritin <12 ng/mL). To assess the impact of notifying donors of LF results, we compared donation behavior of "Test" subjects before and after sending an LF notification letter to that of "Control" subjects before and after increasing the minimum hemoglobin for male donors. An electronic survey to Test donors inquired about iron supplementation practices. RESULTS: Prevalence of LF was 50% and AIS was 23%, with increase in risk associated with more frequent SDP donation, both controlling for RBC donation and in donors with no recent RBC donations. Donation frequency after intervention declined less in 1272 Test donors (19%, from 13.9 to 11.2 annualized donations) than in 878 Control donors (49%, from 12.3 to 6.3 donations). Only 20% of Test donors reported taking supplemental iron when they received the LF letter; 64% of those not taking iron initiated iron supplementation following the letter. CONCLUSIONS: Donors were responsive to notification of LF and attendant messaging on iron supplementation. Ferritin testing potentially benefits donor health and a stable platelet supply.
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