The present study aimed to determine the level of hemoglobin and hematocrit in adult patients treated at the health post of Buenos Aires Sur in the district of Víctor Larco Herrera, May 2017, with prior informed consent. Sixty blood samples obtained from the toe of the finger were used. The biochemical determinations of hemoglobin were based on the spectrophotometric method (ferrous iron is oxidized to ferric iron and subsequent quantification of cyanometahemoglobin formed) and hematocrit, using the microhematocrit method (separation of plasma erythrocytes by the action of centrifugal force and measurement of volume of them). With the data obtained it was observed that 83.6% of the total of patients were women and the rest, males. 83.6% of the patients had normal hemoglobin values and 11.5% of the total had decreased values. Thus, 90.2% of the total number of patients had normal hematoc...