Quick Review Cards for Medical Laboratory Science

Cytochemical Stains for Differentiation

of Acute Leukemia

Hematology Review 324

STAIN AML ALL

Myeloperoxidase Pos Neg

Sudan black Pos Neg

Napthol AS-D chloroacetate esterase (specific esterase) Pos Neg

Periodic acid–Schiff (PAS) Neg or diffusely pos Pos (coarse granular or block-like)