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Cholinesterase, Serum and RBC

CPT: 82480; 82482
Updated on 09/22/2020
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Test Includes

RBC cholinesterase; serum cholinesterase

RBC cholinesterase; serum cholinesterase

Expected Turnaround Time

3 - 6 days

Related Information

Related Documents

Specimen Requirements


Serum and whole blood


2 mL serum and 7 mL whole blood

Minimum Volume

0.1 mL serum and 1 mL whole blood


Red-top tube or gel-barrier tube and lavender-top (EDTA) tube


Separate serum from cells in red-top tube and place in transport tube. Do not separate EDTA tube.

Storage Instructions

Room temperature. Whole blood (RBC): Stable at room temperature or refrigerated for 14 days and unstable frozen. Serum: Stable at room temperature, refrigerated, or frozen for 14 days; freeze/thaw cycles: stable x3.

Causes for Rejection

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

Test Details


Spectrophotometry (Ellman)−kinetic


Order Code Order Code Name Order Loinc Result Code Result Code Name UofM Result LOINC
028290 Cholinesterase, Serum and RBC 007211 Cholinesterase, Serum IU/L 2098-2
028290 Cholinesterase, Serum and RBC 007286 Cholinesterase, RBC IU/L 2099-0

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