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Updated: Jul 11, 2026

Quantitating Iron Transport Across the Mouse Placenta In Vivo Using Nonradioactive Iron Isotopes
Published on: May 10, 2022
Non-transferrin-bound iron in plasma following administration of oral iron drugs
Bernd Dresow1, Doerte Petersen, Roland Fischer
1Inst. für Biochemie und Molekularbiologie II: Molekulare Zellbiologie, Zentrum für Experimentelle Medizin Universitätsklinikum Hamburg-Eppendorf, Hamburg, Germany.
Abstract:
Non-transferrin-bound iron (NTBI) was detected in serum samples from volunteers with normal iron stores or from patients with iron deficiency anaemia after oral application of pharmaceutical iron preparations. Following a 100 mg ferrous iron dosage, NTBI values up to 9 muM were found within the time period of 1-4 h after administration whereas transferrin saturation was clearly below 100%. Smaller iron dosages (10 and 30 mg) gave lower but still measurable NTBI values. The physiological relevance of this finding for patients under iron medication has to be elucidated.
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