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Test ID:
CHE
Cholinesterase – Total, Serum
Orderable by Ontario ND
Test Overview
Clinical Utility
To determine if you have been exposed to and/or poisoned by certain organophosphate chemicals found in pesticides; to monitor cholinesterase levels if you work with pesticides.
Method
Enzymatic
Result Included
Cholinesterase - Total
Specimen
Specimen Type
SerumImportant Note: TEST ID CHE
Non-interfaced clients should specify the Test ID CHE when ordering this test. Not doing so will cause processing delays while ICL ascertains which test you are requesting.
A similar test is offered by this lab: Cholinesterase Phenotype, Serum
Containers
Collection Containers
Red top (no additive); Gold top (clot activator & gel)
Volume
Sample Volume
2 mL
Patient Preparation
If patient has had recent surgery please wait 24 hours post surgery before blood collection.
Collection & Handling
Handling Information
Store and send cold or frozen.
Stability
| Ambient | Refrigerated | Frozen |
|---|---|---|
| 24 hours | 2 months | Over 2 months |
Rejection Criteria
| Criteria | Specification |
|---|---|
| Specimen | Plasma |
Performance & Interpretation
Turnaround Time
10 days
Results
Name
Units
Reference Range
Conversion
-
Cholinesterase - TotalU/L620 - 1370
Poisoning from insecticides is best demonstrated by a fall in Cholinesterase from pre-exposure baseline levels.
Referral Location
Canada
Interface & Setup
HL7 Interface Codes
| Order Code | Result Name | Result Codes | Units |
|---|---|---|---|
| CHE | CHOLINESTERASE, TOTAL | 6556 | U/L |
Test Version
Last Updated
2023-02-01