|Values are valid only on day of printing.|
Unstable hemoglobins precipitate in dilute solutions of isopropanol. Washed erythrocytes are hemolyzed and cleared by centrifugation. Isopropanol is added. The hemolysate is incubated at 37 degrees C for 20 minutes and examined for turbidity. There is no turbidity with normal hemoglobins.(Schmidt RM: Laboratory diagnosis of hemoglobinopathies. In Hematology Clinical and Laboratory Practice. Edited by RL Bick. St. Louis, Mosby-Year Book Inc, 1993, pp 327-389)
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