Contribution of the study of anemia in vitamin D deficiency rickets. I. Study of red blood cell survival.

The red blood cell T50 51Cr was determined in 14 infants with deficiency rickets unaccompanied by a myeloproliferative syndrome. There is a relationship between the values of T50 51Cr and the age of the patients, constant low values having been found in children under 14 months. This suggests hemolysis in the youngest rachitic children.