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Cholinesterase, Plasma and RBC

CPT: 82480; 82482
Updated on 05/19/2019
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Test Includes

Plasma cholinesterase; RBC cholinesterase

Plasma cholinesterase; RBC cholinesterase

Expected Turnaround Time

2 - 4 days

Related Documents

Specimen Requirements


Plasma and whole blood


2 mL plasma and 5 mL whole blood

Minimum Volume

0.1 mL plasma and 1 mL whole blood


Lavender-top (EDTA) tube and transport tube marked “plasma”


Separate plasma from cells for one lavender-top tube, only. Place in transport tube and mark “plasma.” Do not separate other EDTA tube.

Storage Instructions

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.

Causes for Rejection

Plasma and whole blood samples not sent; anticoagulants other than EDTA (RBC only); frozen whole blood received; hemolyzed plasma or whole blood

Test Details


Spectrophotometry (Ellman)−kinetic


Order Code Order Code Name Order Loinc Result Code Result Code Name UofM Result LOINC
214007 Cholinesterase, Plasma and RBC 160200 Cholinesterase, Plasma IU/L 2098-2
214007 Cholinesterase, Plasma and RBC 007286 Cholinesterase, RBC IU/L 2099-0

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