England & Fraser Index: Discriminant function for microcytic anemia. Negative values point toward Thalassemia, positive toward IDA.
Verified
Last Review: 2026-07-17
| Value | Likely Diagnosis |
|---|---|
| Negative (< 0) | Beta-Thalassemia Trait |
| Positive (> 0) | Iron Deficiency Anemia |
England JM et al. • The Lancet. 1973;301(7801):449-452
Last Comprehensive Review: 2026-07-17
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