A small-dose iron tolerance test as an indicator of mild iron deficiency

Area of Science:

• Hematology
• Nutritional Science
• Clinical Diagnostics

Background:

• Iron deficiency is a global health concern.
• Accurate assessment of iron absorption is crucial for diagnosis and treatment.
• Traditional methods for assessing iron status can be invasive or complex.

Purpose of the Study:

• To evaluate the efficacy of a small-dose iron tolerance test in detecting iron deficiency.
• To compare iron absorption responses in normal versus iron-deficient individuals.
• To establish a sensitive, non-radioactive method for assessing iron status.

Main Methods:

• Administered small oral iron doses (5-20 mg) to participants.
• Measured plasma iron concentration at baseline and regular intervals post-ingestion.
• Included both normal and mildly iron-deficient adult men in the study cohort.

Main Results:

• Individuals with normal iron stores exhibited minimal changes in plasma iron levels.
• Mildly iron-deficient men demonstrated substantial increases in plasma iron concentration.
• The observed plasma iron level changes were consistent and dose-dependent.

Conclusions:

• The small-dose iron tolerance test is a sensitive indicator of iron deficiency.
• This method offers a reliable, non-radioactive alternative for studying iron absorption.
• The test provides a practical approach for clinical assessment of iron status.