Comparison of cation-osmotic haemolysis in normal and low birth weight newborns during the first month of life.

The present study was designed to compare cation-osmotic haemolysis (COH) in normal versus low birth weight newborns during the first month of postnatal life. COH was assessed in 80 normal (NBW) and 45 low birth weight newborns (LBW). A significant decrease in COH in the solutions with low ionic strength (15.