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Test Code
VGCCA
Test Name
Voltage-Gated Calcium Channel Antibody
CPT Codes
86596
Expected Turnaround Time
3 - 8 days
Clinical Utility

Measurement of P/Q-type voltage-gated calcium channel (VGCC) antibodies as an aid in the diagnosis of Lambert-Eaton myasthenic syndrome (LEMS).
Specimen and Container Info

Specimen Type: Serum

  

Collection Container: Gold Top, Serum Separator

Alternate Collection Container: Red Top, Plain

Desired Specimen Volume: 0.5 mL
Collection Instructions
  1. Collect a gold top, serum separator tube via venipuncture.
Processing and Submission Instructions
  1. Separate serum from cells within one hour of collection.
  2. Transfer 0.5 mL of serum to a clear aliquot tube (screw cap).
Patient Preparation

 Patient should have no radioactive isotopes administered 24 hours prior to venipuncture.
Transport Instructions

Transport to the laboratory refrigerated. 
Stability Requirements

Room Temperature

14 days

Refrigerated

14 days

Frozen

14 days

Freeze/Thaw Cycles

 Stable x3
Causes for Rejection
  • Nonserum specimen
  • Gross hemolysis
  • Gross lipemia
Methodology
Radioimmunoassay
Reference Intervals

See patient report.

Alternate Names
  • Lambert-Eaton Myasthenic Syndrome Antibody
  • LEMS Autoantibody
  • P/Q Type VGCC
  • VGCC Antibody
  • VGCCA
Reference Lab
Labcorp Of America Holdings
Testing Schedule
Routine, 1 time per week
The American Medical Association (AMA) Current Procedural Terminology (CPT) codes published by HNL Lab Medicine are guidelines and are intended for informational purposes only. CPT coding is the exclusive responsibility of the billing entity. View the Terms.
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