N Methyl D Aspartate Receptor Antibody IgG Serum with Reflex to Titer


Sunquest Code:NMDASR  
Epic Code:LAB6828Epic Name:NMDA Receptor AB IgG Serum with Reflex
Methodology:Indirect fluorescent antibody
CPT Code:86255, 86256
Turnaround Time:Specimens are sent to reference laboratory Mon-Sat; results are reported within 1-5 days.
Compliance:

This test was developed and its performance characteristics determined by ARUP Laboratories. The U.S. Food and Drug Administration has not approved or cleared this test; however FDA clearance or approval is not currently required for clinical use. The results are not intended to be used as the sole means for clinical diagnosis or patient management decisions.



Collection Instructions

Specimen:Blood
Optimal Volume:2 mL
Minimum\Peds Volume:0.5 mL
Causes for Rejection:CSF or plasma. Contaminated, hemolyzed or severely lipemic specimens.


Processing and Shipping

Specimen Processing:Centrifuge and aliquot 1 mL, 0.15 mL minimum within 2 hours of collection. Store in refrigerator.
Shipping Instructions:Ship at refrigerated temperature.
Test Performed at or Referral Lab Lab Sendouts  (ARUP)
Referral Lab number:2004221


Interpretive

Reference Range:Less than 1:10
Use: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 test result does not rule out a diagnosis of autoimmune limbic encephalitis.


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