Yale New Haven Hospital

Department of Laboratory Medicine
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NMDA receptor Ab, IgG CSF w/reflex to titer

Lab Section: 

Sendout Reference

 

Lab Location: 

Sendout

Reference Lab: 

ARUP

 

Test ID: 

LAB6674

 

Synonyms: 

Glutamate Receptor Antibodies in CSF N-methyl-D-Aspartate Receptor Antibody, IgG in CSF

Methodology: 

Semi-Quantitative Indirect Fluorescent Antibody

Schedule: 

Tuesday, Friday

Reported: 

7-10 days

Specimen Requirements: 

Collection: 3.0 mL Cerebrospinal Fluid in a CSF Tube.
Pediatric volume: 1 mL.
Transport: Refrigerated.
Unacceptable conditions: Contaminated, hemolyzed, or severely lipemic specimens.
Stability: Ambient: 48 hours; Refrigerated: 2 weeks; Frozen: 1 year (avoid repeated freeze/thaw cycles)

 

Notes: 

Clinical Indications: Anti-NMDA receptor IgG antibody is found in a subset of patients with autoimmune limbic encephalitis and may occur with or without associated tumor. Decreasing antibody levels may be associated with therapeutic response; therefore, clinical correlation must be strongly considered. A negative test result does not rule out a diagnosis of autoimmune limbic encephalitis.

Reference Interval: 

See patient report or consult reference laboratory website.

 

http://ltd.aruplab.com/Tests/Pub/2005164

CPT Code(s): 

86255; if reflexed, add 86256

Last Changed: 

12/27/2016 00:59:18

Last Reviewed: 

8/28/2017 7:34:35