Anemia Diagnosis Questionnaire for Primary Health Physicians
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Identification


Settings Some labs use 82 fL Some labs use 98 fL Typical reference ranges: • Men (18+): ~42-52% • Women (18+): ~37-47% • Pregnant women: ~33-36% (Ranges may vary by lab.)
Unit System: Toggle between International System (mmol/L, μmol/L) and US Conventional (g/dL, μg/dL) units
Complete Blood Count WHO defines anemia in adults as: <13 g/dL for men, <12 g/dL for non-pregnant women, <11 g/dL for pregnant women. Anemias are classified into: • Microcytic (MCV <80 fL) • Normocytic (80–100 fL) • Macrocytic (>100 fL). Erythrocytes mature in ~7 days from stem cells. This is a simplified correction factor. RPI adjusts reticulocyte % for the level of anemia & RBC maturation time.      Mentzer index = MCV / RBC count.
Serum Studies    Transferrin saturation (%) = (Serum Iron / TIBC) × 100     Often elevated in iron deficiency; helps distinguish from anemia of chronic disease. TR-F index = sTfR / ln(Ferritin). A higher index often suggests iron deficiency.     

Simplified CKD-EPI formula removing race factor, adapted from Levey & Inker, 2009-2021.
Hematology Lab If hemolysis is not due to infection/drugs, check for GPI-anchor deficiency (PNH). Positive test suggests hereditary spherocytosis.

Medical History