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Test Code VZV IgG Varicella Zoster Antibody

Aliases

Varicella Ab

Useful For

Intended for the qualitative detection of specific IgG antibodies to Varicella Zoster Virus in human serum as an aid to determine previous infection of VZV

Patient Preparation

No special patient preparation required

Collection Method

Venous collection

Minimum Volume

1 mL

Container

Gold Top Serum Separator

Lithium Heparin

Preferred Specimen

Serum

Acceptable Specimens

Serum:

  • Gold Top SST
  •  
  • Red Top

Plasma: 

  • Sodium and Lithium Heparin
  • K2 - EDTA

Reference or Target Ranges

Negative: <1.00 S/CO.

Absence of detectable VZV IgG antibodies. Does not rule out acute infection during incubation and early stages. 

Positive: ≥1.00 S/CO

Presence of detectable VZV IgG antibodies. Does not indicate active infection or stage of disease. 

Reportable Units

Signal/Cutoff 

Critical Value

Not defined for this assay

Reasons for Rejection

Hemolysis Threshold Gross
Icterus Threshold Gross
Lipemia Threshold Gross
Other QNS, contaminated, improperly labled, improper specimen type.

Specimen Stability

Ambient 3 Days
Refrigerated (2°C to 8°C) 7 Days
Frozen(<-20°C to 0°C) 1 Month

Performance Information

Days and Time Performed Monday – Friday 8 AM – 4:30 PM
Expected Turn Around Time Within 3 days of arrival in lab
Stat Availabilty No
Performing Bench Special Chemistry
Methodology/Method Description DiaSorin Liasion XL – Chemiluminescence immunoassay (CLIA)

Special Handling

Centrifuge specimen as early as possible after clotting; transfer serum to a plain polypropylene tube and refrigerate.

Additional Information/Important Notes

The result alone is not diagnostic and should be considered with other clinical data and patient symptoms. Results from immunosuppressed patient should be interpreted with caution. Performance characteristics with individuals vaccinated with VZV (ROD strain) have not been established.

CPT Codes

86787