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Paediatric Laboratory Medicine

Beta-Hexosaminidase, fib

Test Name

Beta-Hexosaminidase, fib

Test Code



Metabolic Diseases



Specimen Type

Serum for males and non-pregnant females preferred. Leukocytes for pregnant females preferred.

Minimum Specimen Requirements

3-5 mL


Ship same day at room temperature to above address to arrive next day. Do not ship on a Friday.

Special Requirements

Draw 2mL blood, clotted (red top) and 5 mL heparinized blood (green top). Please specify if women patients are pregnant or on oral contraceptives.

Fill the Tay-Sachs Carrier Screening Program - Biochemical Testing Requisition (pdf)

Shipping and Contact Information

The Hospital for Sick Children
Rapid Response Laboratory
170 Elizabeth Street, Room 3642
Toronto, ON
M5G 2G3
Phone: 416-813-7200
Phone: 1-855-381-3212

Reference Range

30-45% B