Days Set Up
Daily
Analytic Time

2 - 3 days

MiChart Code
Pseudocholinesterase
Soft Order Code
CHED

Test Updated:

Synonyms

Cholinesterase
Cholinesterase, Dibucaine Inhibition
Dibucaine Inhibition
PSEUDOCHOLINE, DIBUCAINE INHIB
CHED-D
CHOLIN T
DIBU INHIB
PSEUDOCHOL-E, DIBUCAINE INHIBN
CHOLINESTERASE, TOTAL

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Test Overview

Test Methodology

Colorimetric, Kinetic

Test Usage

Identifying individuals with the abnormal allele who do not rapidly hydrolize the drug succinylcholine. Some individuals with normal total pseudocholinesterase levels may be sensitive to succinylcholine.

Reference Range

Dibucaine Inhibition: 70 - 90%, Congenital Deficiency: 18 - 20%. Total: Males: 3100 - 6500 U/L; Females: < 18 yrs: Not established; 18-49 yrs: 1800 - 6600 U/L; > or = 50 yrs: 2550 - 6800 U/L.

* Reference ranges may change over time. Please refer to the original patient report when evaluating results.

Specimen Requirements

Collection Offsite

Collect specimen in a red top or SST tube. Centrifuge WITHIN 2 HOURS, aliquot serum into a plastic vial and refrigerate. For cases of prolonged apnea following surgery, wait 24 hours before obtaining specimen.

Yellow Top Tube
Normal Volume
1 mL serum
Minimum Volume
0.25 mL serum

Billing Information

CPT Code
82638, 82480
Pro Fee Code
 
LOINC
Z79-4

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Quality that sets us apart

As the reference laboratory division of Michigan Medicine's Department of Pathology, MLabs shares the institution's commitment to applying established quality principles to clinical laboratory testing. Like other large organizations in complex, consequential fields, we rely on an established approach to monitor quality throughout the testing process.

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