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The objective of our study was to estimate the performance of Sahli method. A comparative study of the measure of the rate of hemoglobin was made from Sahli method and analyzer of hematology at 172 patients. The determination of the rate of hemoglobin by the analyzer is held as reference method. Prevalence of the anemia was 33.7 % and 30.2 % respectively for the analyzer and the Sahli. The sensibility and the specificity of Sahli are respectively 77.6 % and 93.9 % and the exactness was 88.4%. The average concentration of hemoglobin was respectively 12.1 g/dL (± 3.06) and 11.9 g/dL (± 2.71) by analyzer and by Sahli (p = 0.95). The Sahli showed to be a method of good sensibility, very good specificity in the diagnosis of the anemia at the patients. Her exactness being very good, it is interesting both in the evaluation of the anemia and in the dosage of hemoglobin. [ABSTRACT FROM AUTHOR]