NMDA Receptor (NR1-subunit) Autoantibody Test

Test Code
419

Test Details


Test code:419
Type of disorder:Paraneoplastic and Other Antibody Disorders of the CNS
Disease(s) tested for:Paraneoplastic Neurological Syndrome, Autoimmune Encephalitis
Profiles that contain this test:NeoComplete Paraneoplastic Evaluation with Recombx®
NeoEncephalitis Paraneoplastic Evaluation with Recombx®
Paraneoplastic Autoantibody Evaluation with Recombx®, CSF

Technical Information


Clinical Significance:Anti-NMDA receptor (NR1-subunit) antibody is found in patients with encephalitis, acute psychiatric disturbances, seizures, memory deficits, and hypoventilation.
Methodology: Immunofluorescence Assay (IFA)
Reference Range:Negative

CPT Coding


The CPT codes provided are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payer being billed.

CPT:86255

Specimen Requirements


Please label each specimen tube with two forms of patient identification. These forms of identification must also appear on the requisition form.

Specimen Type:Serum
Specimen Stability: Room temperature: 72 hours, Refrigerated: 28 days, Frozen: 1 year,
Specimen Requirements: 2 mL (0.5 mL minimum) serum in a Red-top tube or Serum Separator Tube (SST)
Instructions:Serum must be separated from whole blood within 48 hours of collection.
Alternate Specimen Type:Cerebrospinal Fluid (CSF)
Alternate Specimen Stability:Room temperature: 72 hours,
Alternate Specimen Requirements:2 mL (0.5 mL minimum) CSF collected in a sterile leak-proof container
Alternate Specimen Stability:Refrigerated: 28 days,
Alternate Specimen Stability:Frozen: 28 days,

Shipping Considerations


Transport Temperature:Refrigerated
Set-up/Analytic Time:5-7 days

Additional Resources

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