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The Newcomer colorimetric technic for the determination of hemoglobin is considered the most practical, exact method, and is the procedure of choice. The bloods of many people of the Argentine Republic have been examined by the author, who concludes that his values for the hemoglobin of this group of people are similar to those obtained in other parts of the world. Hemoglobin values are greater in males than in females, and greater in the new-born than in the adult; the hemoglobin value drops during pregnancy but rapidly returns to normal after the puerperium. At altitudes of 1,200 meters or more, an appreciable increase in hemoglobin occurs. University students and officials show greater hemoglobin values than do soldiers and sailors. It is thought that this apparent discrepancy is due to differences in nutrition, clothing and conditions of work in these classes of people. The variations encountered in different social groups merit
Cantidad de hemoglobina de la sangre humana en la República Argentina.. JAMA. 1931;97(24):1824. doi:10.1001/jama.1931.02730240074034