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CPE-011 · Calculations
AN-CALC-01: Derived values
Derived values. Evaluates inputs available.
Condition
- inputs available
What it reports
- Mentzer index, corrected reticulocyte count, RPI, transferrin saturation
Diagnostic boundary
- Informational.
Evidence
- EV-MENTZER-1973Mentzer WC Jr. Differentiation of iron deficiency from thalassaemia trait. Lancet. 1973;1(7808):882.Supports: Mentzer index below 13 favors thalassemia trait
Cases where this rule fires
Open a case to see this rule fire with real inputs, then change the values until it stops.
ANEM-FX-01
Microcytic anemia with low ferritin
A 36-year-old, Hb 9.9, MCV 72, ferritin 6, TSAT 7%.
ANEM-FX-02
Microcytic anemia, normal iron indices and a low Mentzer index
MCV 62, RBC 5.7.
ANEM-FX-03
Macrocytic anemia with low B12 and hypersegmented neutrophils
MCV 112.
ANEM-FX-04
Hemolysis: reticulocytes 12%, LDH 640, haptoglobin 5
Spherocytes and a positive DAT.
ANEM-FX-05
Anemia in CKD
eGFR 28, normocytic, low reticulocytes, iron replete.
ANEM-FX-06
Anemia of inflammation
CRP 30, ferritin 340, TSAT 12%.
ANEM-FX-08
Schistocytes with platelets 40
A thrombotic microangiopathy pattern.
ANEM-FX-10
Hemoglobin fell from 13.2 to 9.8
A fall of 3.4 g/dL.
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