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Dibucaine Number With Plasma and RBC Cholinesterase
MessageLabCorp
Test Code
81455
Alias/See Also
"Cholinesterase Inhibition by Dibucaine
Pseudocholinesterase Inhibition"
Pseudocholinesterase Inhibition"
CPT Codes
82480; 82482; 82638
Includes
"Dibucaine number with RBC cholinesterase and plasma cholinesterase
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Preferred Specimen
"Plasma and whole blood
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Minimum Volume
"0.1 mL plasma and 1 mL whole blood
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Transport Container
"Lavender-top (EDTA) tube and transport tube marked “plasma”
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Transport Temperature
"Room temperature. Whole blood (RBC): Stable at room temperature or refrigerated for 14 days and unstable frozen. Plasma: Stable at room temperature, refrigerated, or frozen for 14 days; freeze/thaw cycles: stable x3.
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Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
"Plasma not separated from cells; plasma and whole blood samples not sent; anticoagulants other than EDTA (RBC only); frozen whole blood received; hemolyzed plasma or whole blood
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Methodology
"Cholinesterase by spectrophotometry (Ellman) with dibucaine inhibition "
Limitations
"No single simple test currently exists that can detect all enzyme variants.
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