Test Overview
Method
Fluorometry - enzymatic
Result Included
β-Hexosaminidase Total; Hexosaminidase-B; % Hexosaminidase-B
Specimen
Specimen Type
SerumContainers
Collection Containers
Red Top (no additive)
Volume
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 | Refrigerated | Frozen |
|---|---|---|
| Unacceptable | Unacceptable | 180 days |
If the specimen thaws, it is unsuitable for analysis.
Rejection Criteria
| Criteria | Specification |
|---|---|
| Specimen | Not frozen or Plasma |
Performance & Interpretation
Turnaround Time
12 days
Results
Name
Units
Reference Range
Conversion
-
β-Hexosaminidasenmol/h/mL439 - 1300
-
Hexosaminidase-Bnmol/h/mLSee % Hexosaminidase-B
-
% Hexosaminidase-B% of Total30 - 45
Interpreted on Report
Sample Report
Referral Location
Canada
Interface & Setup
HL7 Interface Codes
| Order Code | Result Name | Result Codes | Units |
|---|---|---|---|
| HEXO | % HEX-B | 22882 | % |
| Hex-B | 22881 | nmol/h/mL | |
| Total Hex | 22880 | nmol/h/mL | |
| BETA-HEXOSAMINIDASE COMMENT | 65261 |
Test Version
Last Updated
2023-01-03