CMAJ Podcasts

Fixing the flag: A new standard for diagnosing iron deficiency


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Iron deficiency affects as many as 40% of women of reproductive age, yet the problem often goes undetected—even when patients have symptoms and complications. On this episode, Dr. Blair Bigham and Dr. Mojola Omole speak with hematologists Dr. Michelle Sholzberg and Dr. Rita Selby about their structural solution to this pervasive problem: a province-wide change to how laboratories flag ferritin results. Their article, “Diagnosis and management of iron deficiency in females”, is published in CMAJ.

Dr. Michelle Scholzberg, a hematologist and clinician scientist at St. Michael’s Hospital and division director of Hematology at the University of Toronto, explains why iron deficiency without anemia is clinically important, how flawed reference standards and stigma around menstruation have contributed to underdiagnosis, why screening based on hemoglobin alone misses many patients and how structural barriers within medicine have long impeded timely detection and treatment. She outlines the evidence that drove a change to the clinical decision threshold for ferritin in Ontario laboratories and describes the movement that led to the change

Dr. Rita Selby, an academic hematologist and medical director of the Ontario Laboratory Medicine Program at Ontario Health, describes how change was implemented across Ontario’s major private labs. She clarifies the distinction between reference ranges and clinical decision limits, and how the shift helps clinicians identify subclinical iron deficiency earlier. She also discusses anticipated challenges, such as increased demand for treatment and the need for accessible knowledge translation tools.

This episode exemplifies how making structural change in Canadian medicine can be difficult, but is possible with  grassroots advocacy and inter-institutional collaboration.

For more information from our sponsor, go to MedicusPensionPlan.com



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