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Insecticide Exposure Panel
0020175
Ordering Recommendation

Preferred test for evaluating acute and chronic exposure to organophosphate pesticides.

Mnemonic
CHE-SCRN
Methodology
Quantitative Enzymatic
Performed
Mon-Fri
Reported
1-4 days
New York DOH Approval Status
This test is New York DOH approved.
Submit With Order
ARUP Consult®
Disease Topics
Specimen Required
Patient Preparation
 
Collect
Lavender (EDTA) or pink (K2EDTA). 
Specimen Preparation
DO NOT FREEZE. Do not spin down or separate. Transport 3 mL whole blood. (Min: 2 mL) 
Storage/Transport Temperature
Refrigerated. Do not place whole blood directly on cool pack when shipping. 
Unacceptable Conditions
Green (sodium or lithium heparin). Frozen whole blood. Hemolyzed specimens. 
Remarks
 
Stability
Ambient: 4 hours; Refrigerated: 1 week; Frozen: Unacceptable 
Reference Interval
Test Number
Components
Reference Interval
 Cholinesterase, Plasma2.9-7.1 U/mL
 Cholinesterase, RBC7.9-17.1 U/mL RBC
 Cholinesterase, RBC - ratio to Hb25-52 U/g Hb
 Cholinesterase, Plasma (Ellman)1.0-2.4 U/mL
 Cholinesterase, RBC (Ellman)4.0-9.0 U/mL WB

Interpretive Data
Ellman Std. test results obtained using a conversion factor which standardizes to the acetylthiocholine assay at 25°C.

Note
CPT Code(s)
82480; 82482
Components
Component Test Code*Component Chart NameLOINC
0020196Cholinesterase, Plasma2098-2
0020197Cholinesterase, RBC - ratio to Hb49231-4
0020448Cholinesterase, RBC2099-0
0020449Cholinesterase, Plasma (Ellman)2098-2
0020450Cholinesterase, RBC (Ellman)2099-0
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please click the sidebar link to access the Interface Map.
Aliases
  • Cholinesterase, RBC & Pseudocholinesterase
  • Pseudocholinesterase & Cholinesterase, RBC