Haematology · Laboratory Medicine
Hemoglobin from Hematocrit (×0.34 / ÷3 Rule) calculator
Enter the published formula inputs below to calculate and interpret this score.
Clinical inputs
%
Allowed range: 5–75 %
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Clinical inputs
- Hematocrit (%)Accepted range: 5 to 75
Primary source
Brugnara C, Moran J. Hematology. In: McPherson RA, Pincus MR, Henry's Clinical Diagnosis and Management by Laboratory Methods. DOI: 10.1016/B978-0-323-29559-4.00032-0. PMID: 21422432. Scope: when direct hemoglobin measurement is unavailable, hemoglobin (g/dL) can be approximated as hematocrit (%) divided by 3, equivalent to multiplying hematocrit (fraction) by 34 g/dL per unit hematocrit. (2007)
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