β-Galactosidase Deficiency, Leukocytes
Galactosialidosis, MPS IVb
Morquio B Disease
Diagnose patients with β-galactosidase deficiency, Morquio disease type B (MPS IVb), and combined β-galactosidase/neuraminidase deficiency (galactosialidosis)
Yellow-top (ACD) tube
Refrigerate after collection. Transport to the testing lab using cool pack or transport kit. Do not allow the sample to freeze. Sample must arrive in the laboratory within four days of collection.