West Nile/St. Louis Encephalitis IgM

Brief Description

The WN/SLE duplex MIA procedure is a replacement for the WN and SLE MAC-ELISAs test with a single, equally sensitive, faster test. It is an immunological capture assay for the qualitative determination of IgM-class antibodies to the WN and SLE viruses.  These viruses co-circulate in parts of the US and are routinely tested concurrently.

Laboratory Unit

Immunology

Methodology

Microsphere-based immunologic assay (MIA)

Specimen Collection

Cerebrospinal Fluid (CSF):

Collect in a sterile container.

Storage/Transport

Cerebrospinal fluid should be stored frozen (-20°C or colder) and shipped with dry ice.

• FRM-QA 4 Refrigeration Outfit Guide

Acceptable Specimen Type(s)

Cerebral Spinal Fluid (CSF)

Test Request

• GPHL Apollo Web Portal
• Web Portal Instructions
• For manual orders, download the GPHL Submission Form

Possible Results

• Positive
• Negative
• Unsatisfactory

Reference Range

Negative

Unacceptable Conditions

• Missing testing requisition
• Missing minimum of 2 patient identifiers
• Improper labeling
• Improper storage/transport of specimen
• No specimen received (empty collection tube).
• Wrong specimen type

Interfering Substances

N/A

Result Reported

5-7 business days

Fees

No charge

LOINC/Order Codes

31703-2 (Order code: 1590)