Georges Hayem

Georges Hayem (25 November 1841 – 28 August 1933) was a physician and hematologist born in Paris.

Georges Hayem was a pioneer in the field of hematology, and is remembered for his studies on the formation of leukocytes and erythrocytes.

He performed the first accurate count of blood platelets, and is credited with developing a solution of mercury bichloride, sodium chloride and sodium sulfate for dilution of blood prior to counting erythrocytes with a hemocytometer.

With bacteriologist Georges-Fernand Widal (1862–1929), the eponymous "Hayem-Widal syndrome" is named, which is an historical term for acquired hemolytic anemia.

[1] In 1872 he founded the Revue des sciences médicales en France et à l’étranger.