Abstract
Conclusions 1. Administration of hydrocortisone or corticosterone for 60 days to normal rats elevated the total circulating red cell volume from 1.45 to 1.64 times that of normal untreated controls. 2. Rats treated with 0.5, 2 or 5 mg hydrocortisone or 5 or 10 mg corticosterone/kg body weight for 60 days, showed a significant elevation in erythrocyte, hematocrit and hemoglobin values.