cyanide-nitroprusside test
Definition: a qualitative test for diagnosis of cystinuria; the addition of fresh sodium cyanide formed by sodium nitroprusside to a sample of urine gives rise to a stable red-purple color in the presence of cystine.
Definition: a qualitative test for diagnosis of cystinuria; the addition of fresh sodium cyanide formed by sodium nitroprusside to a sample of urine gives rise to a stable red-purple color in the presence of cystine.