β-Hexosaminidase Total; Hexosaminidase-B; % Hexosaminidase-B
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Beta-Hexosaminidase, Serum
Test ID: HEXO
Test
Method
Enzymatic Fluorimetric
Report Includes
Specimens
Serum
Test Location
Hospital for Sick Children, 555 University Avenue, Toronto ON M5G 1X8
Test Version
3-Jan-2023
Specimen
Specimens
Serum
Collection Containers
Red Top (no additive)
Sample Volume
2 mL
Minimum Volume
0.4 mL
Specimen Comment
Plasma is not acceptable
Collection & Handling
Handling Information
Separate and freeze immediately. Store and send frozen.
Additional Information
Indicate patient’s age, gender and race. For female patient indicate if pregnant or on oral contraceptives. Ontario patients Tay-Sachs Carrier Detection: Please submit completed Tay-Sachs Requistion.
Stability
| Ambient | Unacceptable |
|---|---|
| Refrigerated | Unacceptable |
| Frozen | 180 days |
Additional Stability Information
If the specimen thaws, it is unsuitable for analysis.
Rejection Criteria
| Specimen | Not frozen or Plasma |
|---|
Test Version
3-Jan-2023
Performance / Interpretation
Method
Enzymatic Fluorimetric
Turnaround Time
12 days
Results
| Name | Units | Reference Range | Conversion Factor | |
|---|---|---|---|---|
| β-Hexosaminidase | nmol/h/mL |
|
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| Hexosaminidase-B | nmol/h/mL |
|
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| % Hexosaminidase-B | % of Total |
|
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Sample Reports
Test Location
Hospital for Sick Children, 555 University Avenue, Toronto ON M5G 1X8
Test Version
3-Jan-2023
Interface / Setup
HL7 Interface Codes
| Order Code | Result Codes | Units |
|---|---|---|
| HEXO | 22882% HEX-B | % |
| 22881Hex-B | nmol/h/mL | |
| 22880Total Hex | nmol/h/mL | |
| 65261BETA-HEXOSAMINIDASE COMMENT |
Sample Reports
Test Version
3-Jan-2023