A Patient in the Hospital for a Hemolytic Crisis After

Multiple Choice

A patient in the hospital for a hemolytic crisis after an infection has Heinz bodies when his blood is incubated with crystal violet.The fluorescent enzyme-screening test for G6PD is normal.Select the best course of action.

A) Repeat the red cell examination with new methylene blue stain.
B) Repeat the enzyme test several weeks after the hemolytic crisis.
C) Perform an osmotic fragility test.
D) Perform a haptoglobin test.