HEXOSAMINIDASE A AND TOTAL HEXOSAMINIDASE, LEUKOCYTES

Test Documentation
Components
This is the preferred test for pregnant females.

Specimen Required
Draw blood in a yellow ACD (A or B) tube. Send 7.0 mL whole blood (5.0 mL minimum) refrigerated in the original tube. Sample must arrive within 48 hours of draw.
Due to the nature of the testing procedure, specimens will only be accepted on Monday, Tuesday and Wednesday.

Rejection Criteria
Gross hemolysis, specimen >96 hours old

Methodology
Heat Inactivation, Fluorometric, Semiautomated

Stability
Room Temperature: 4 days; Refrigerated: 4 days; Frozen: Unacceptable

Reference Range
Total:   16.4–36.2 U/g of cellular protein  
Hexosaminidase A:   63–75% of total (normal)  

Performed
Specimens stabilized: Monday-Sunday
Testing: Monday, Thursday, Friday

Turnaround Time8-10 days
Test CodeHEXOL
CPT-4 Code (s)
83080 x 2
LOINC Codes
Percent A   23825-3  
Hexosaminidase A & Total, WBC   24075-4  
Interpretation   Not available  

Warde
Medical
Laboratory