Test Overview
Clinical Utility
To identify individuals with inherited pseudocholinesterase deficiency before they are given anesthesia with the muscle relaxant succinylcholine or to help determine the cause of prolonged apnea after surgical anesthesia.
Method
Enzymatic
Result Included
Cholinesterase - Total; Cholinesterase Phenotype
Aliases/Synonyms
Dibucaine Inhibition Test; Fluoride Number; Pseudo Cholinesterase
Specimen
Specimen Type
SerumImportant Note: TEST ID CHEP
Non-interfaced clients should specify the Test ID CHEP 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 - Total, 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
-
Cholinesterase PhenotypeRefer to report.
Comment
The phenotype for the usual enzyme is UU
Referral Location
Canada
Interface & Setup
HL7 Interface Codes
| Order Code | Result Name | Result Codes | Units |
|---|---|---|---|
| CHEP | CHOLINESTERASE, TOTAL | 6556 | U/L |
| CHOLINESTERASE PHENOTYPE | 6562 |
Test Version
Last Updated
2023-02-01