ASH Guidelines Shift Ferritin Thresholds to Catch Hidden Iron Deficiency
The American Society of Hematology (ASH) has released new guidelines that lower the ferritin thresholds required to diagnose iron deficiency, aiming to identify the condition earlier. These updated standards replace statistical 'normal' ranges with clinical outcome-based markers, potentially reclassifying many previously 'normal' results as deficient. The change is particularly significant for women with heavy menstrual bleeding and pregnant individuals, who now have higher diagnostic cutoffs. Experts emphasize that iron deficiency affects approximately 14% of U.S. adults and often precedes anemia, causing fatigue and cognitive issues without obvious symptoms. While the guidelines standardize diagnosis, they do not mandate immediate supplementation; treatment depends on the underlying cause, which may include blood loss or absorption issues. High ferritin levels do not necessarily indicate excess iron, as inflammation or liver disease can also elevate these markers.
