What question did this study set out to answer?

This research aims to refine the referral thresholds for eosinophilia to improve diagnostic accuracy and clinical outcomes.

December 8, 2025Blood

Redefining hematology referral thresholds for eosinophilia: A 10-year experience at an academic medical center

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Retrospective analysis shows risk stratification can enhance diagnosis of eosinophilia and hypereosinophilic syndrome.

This research aims to refine the referral thresholds for eosinophilia to improve diagnostic accuracy and clinical outcomes.
Conducted a retrospective study of patients referred for eosinophilia at Oregon Health & Science University.
Analyzed patient demographics, absolute eosinophil counts, and diagnostic outcomes.
Utilized ROC analysis to determine optimal AEC thresholds for clinically meaningful eosinophilia.
142 patients referred with eosinophilia were evaluated; peak AEC ranged from 0.5 to 45.66 x 10 9/L.
An AEC threshold of 1.5 x 10 9/L showed 97% sensitivity for clinically meaningful eosinophilia.
The study identified refined AEC cutoffs to reduce unnecessary referrals in low-risk patients.

Shatzel et al. (2025) studied this question.

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