Oral Iron Absorption Test as a Predictor of Response to Oral Iron Therapy and Gastrointestinal Malabsorption Syndromes in Iron Deficiency Anemia

OIAT demonstrates robust diagnostic performance for predicting response to oral iron therapy and identifying malabsorption syndromes in IDA. The high negative predictive value positions OIAT as an effective first-line screening tool, potentially reducing the need for invasive investigations in patients with normal test results.