NMDA Receptor (NR1-subunit) Autoantibody Test

Test Code
92394


Alias/See Also
LAB00260


CPT Codes
86255

Preferred Specimen
2 mL serum


Minimum Volume
0.5 mL


Other Acceptable Specimens
CSF collected in: Sterile leak-proof container


Instructions
Serum must be separated from whole blood within 48 hours of collection.

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


Transport Container
Transport tube


Transport Temperature
Refrigerated (cold packs)


Specimen Stability
Serum
Room temperature: 72 hours
Refrigerated: 28 days
Frozen: 1 year

CSF
Room temperature: 72 days
Refrigerated: 28 days
Frozen: 28 Days


Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Turbid • Bacterial contamination


Methodology
Immunofluorescence Assay (IFA)

Setup Schedule
Sun-thurs


Reference Range
Technical Results Negative


Clinical Significance
Anti-NMDA receptor (NR1-subunit) antibody is found in patients with encephalitis, acute psychiatric disturbances, seizures, memory deficits, and hypoventilation.


Performing Laboratory
Athena Diagnostics, Inc.
200 Forest Street, 2nd Floor
Marlborough, MA 01752-3023




The CPT Codes provided in this document 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 payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.