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Test Code
HZVM
Test Name
Varicella-Zoster Ab, IgM
CPT Codes
86787
Expected Turnaround Time
1 - 4 days
Clinical Utility

This test is used to detect IgM antibodies specific for VZV. These IgM antibodies, if present, can help confirm a diagnosis of VZV acute infection. The IgM response to VZV can be detected at seven days postinfection and usually peaks at 14 days. If a patient presents more than nine days after the appearance of a rash, this assay should not be used. (See Varicella Zoster Virus (VZV) Antibodies, IgG)
Specimen and Container Info

Specimen Type: Serum

  

Collection Container: Gold Top, Serum Separator

Desired Specimen Volume: 1 mL
Collection Instructions
  1. Collect gold top, serum separator tube via venipuncture
Processing and Submission Instructions
  1. Separate serum from cells.
  2. Transfer 1 mL of serum to a clear aliquot tube.
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
  • Hemolysis
  • Lipemia
  • Gross bacterial contamination
  • Plasma samples
Methodology
Enzyme Immunoassay
Reference Intervals

• Negative: <0.91 index

• Borderline: 0.91−1.09 index

• Positive: >1.09 index
Alternate Names
  •  VZV IgM
Reference Lab
Labcorp Of America Holdings
Testing Schedule
Routine Monday-Friday
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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