Test directory: Cholinesterase, RBC & Plasma

Ordering Code524
Test NameCholinesterase, RBC & Plasma
AliasPseudocholinesterase
Preferred SpecimenWhole Blood and Plasma
Preferred ContainerTwo EDTA, K2 (Lavender)
Other Specimen/ContainerWhole blood in Sodium Heparin (Green) and Plasma in Sodium
Heparin (Green).
Optimum Volume5 mL EDTA Whole Blood and 1 mL EDTA Plasma
Collection InstructionsDraw two EDTA lavender tubes of whole blood.
Handling InstructionsSpin one EDTA tube to separate plasma. Pour plasma into plastic aliquot tube and refrigerate. Send both whole blood and plasma samples refrigerated. Do not send packed cells
Do not send one tube of whole blood. Plasma cholinesterase results, as well as the calculated RBC cholinesterase results, are not accurate if plasma sample is not separated from the RBC's in a timely manner.
Transport RequirementsOahu: Refrigerated
Airline: Refrigerated
Specimen StabilityAmbient: 1 Day
Refrigerated: 1 Week
Rejection CriteriaReceived ambient at reference laboratory, Frozen, Hemolyzed,
Plasma not separated from cells, One tube of whole blood only received.
Avail. StatNO
Analytic TimeUp to 5 Days
MethodologyKinetic Spectrophotometric
Reference Lab Quest Diagnostic Lab-NI

Reference range(s)

The reference ranges listed below are valid on this date of April 23, 2024.
ComponentAgeMale NormMale Critical LowMale Critical HighFemale NormFemale Critical HighFemale Critical LowUnitsAdd'l info
Cholinesterase, RBCALLSee report.
Cholinesterase, PlasmaALLSee report.