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Laboratory Test Directory

Pseudocholinesterase, Total

Overview
Specimen Requirements
Billing Code

Components

Name Method Department Units
Cholinesterase, Plasma Quantitative Enzymatic
Send Out U/L
Test Code

XPCHE

Typical Turnaround Time

4 days

Setup Schedule

Dayshift
Monday through Friday

Specimen Requirements

Plasma Spun, Serum Spun

Container Type Container Size Specimen Volume
Preferred

Purple tube (EDTA)

 3 mL 0.5 mL
Alternate

Red tube, (no anticoagulant), No Gel

 3 mL 0.5 mL
Alternate

Gold tube, (SST) with Gel

 3.5 mL 0.5 mL
Stability

Refrigerated - 1 week(s)
Frozen - 3 month(s)
Room temperature - 4 hour(s)

Specimen Preparation

  • Centrifuge within 2 hours, separate supernatant and refrigerate

Serum Spun

Container Type Container Size Specimen Volume
Preferred

Red tube, (no anticoagulant), No Gel

 3 mL 0.5 mL
Stability

Refrigerated - 1 week(s)
Frozen - 3 month(s)
Room temperature - 4 hour(s)

Specimen Preparation

  • Allow to clot completely at room temperature
  • Centrifuge within 30 minutes and separate supernatant
  • Centrifuge, remove plasma/serum and refrigerate

Reasons for Rejection

  • Not centrifuged within time frame
  • Hemolyzed specimen
  • Specimen drawn during surgery, in recovery room or within 2 days post surgery

Comments

Specimen must be drawn prior to surgery or more than two days following surgery.  Do not draw in recovery room. Plasma values slightly lower than serum.

CPT Code

  • 82480