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Test Code WNS West Nile Virus Antibody, IgG and IgM, Serum

Additional Codes

Epic Ordering Code LAB3041975
NBS code LBC11936
Service code 37167

Reporting Name

West Nile Virus Ab, IgG and IgM, S

Specimen Type

Serum


Specimen Required


Supplies: Sarstedt Aliquot Tube 5 mL (T914)

Collection Container/Tube:

Preferred: Serum gel

Acceptable: Red top

Submission Container/Tube: Plastic vial

Specimen Volume: 0.5 mL

Collection Instructions: Centrifuge and aliquot serum into a plastic vial.


National University Hospital-Singapore Note:

NUH Outreach Laboratories:
Specimen Requirements
Submit only one of the following:
Preferred: Yellow Top
Acceptable: Red Top
Processing Requirements
Centrifuge and aliquot serum into a Mayo plastic tube.
Specimen type: Serum
Volume: 0.5 mL
Storage/transport requirements: Refrigerated

Forms

If not ordering electronically, complete, print, and send Infectious Disease Serology Test Request (T916) with the specimen.

Specimen Minimum Volume

0.4 mL

Specimen Stability Information

Specimen Type Temperature Time
Serum Refrigerated (preferred) 14 days
  Frozen  14 days

Reject Due To

Gross hemolysis Reject
Gross lipemia Reject
Gross icterus Reject
Heat Inactivated specimen Reject

Method Name

Enzyme Linked Immunosorbent Assay (ELISA)

Testing Algorithm

The following algorithms are available:

-Meningitis/Encephalitis Panel Algorithm

-Mosquito-borne Disease Laboratory Testing

Profile Information

Test ID Reporting Name Available Separately Always Performed
WNGS West Nile Virus Ab, IgG, S No Yes
WNMS West Nile Virus Ab, IgM, S No Yes
WNVSI West Nile Serum Interpretation No Yes

Day(s) Performed

Monday, Wednesday, Friday

Report Available

Same day/1 to 4 days
National University Hospital-Singapore Note:

Please note that this is a referral test requiring transport to the external testing facility and an additional 3-5 days is required.

Reference Values

IgG: negative

IgM: negative

 

Reference values apply to all ages.

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Useful For

Laboratory diagnosis of infection with West Nile virus using serum specimens

CPT Code Information

IgG-86789

IgM-86788

LOINC Code Information

Test ID Test Order Name Order LOINC Value
WNS West Nile Virus Ab, IgG and IgM, S 94854-7

 

Result ID Test Result Name Result LOINC Value
WNGS West Nile Virus Ab, IgG, S 29566-7
WNMS West Nile Virus Ab, IgM, S 29567-5
WNVSI West Nile Serum Interpretation 69048-7

Secondary ID

36769

Test Classification

This test has been cleared, approved, or is exempt by the US Food and Drug Administration and is used per manufacturer's instructions. Performance characteristics were verified by Mayo Clinic in a manner consistent with CLIA requirements.
National University Hospital-Singapore Additional Information:

Last updated 18/08/2026