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NMDA Receptor (NR1-subunit) Autoantibody Test
Test CodeNMDA
Alias/See Also
92394
CPT Codes
86255
Preferred Specimen
2 mL serum
Minimum Volume
0.5 mL
Other Acceptable Specimens
CSF submitted in a 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.
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
Plastic screw-cap vial
Transport Temperature
Refrigerated (cold packs)
Specimen Stability
Serum
Room temperature: 72 hours
Refrigerated: 28 days
Frozen: 1 year
CSF
Room temperature: 72 hours
Refrigerated: 28 days
Frozen: 28 days
Room temperature: 72 hours
Refrigerated: 28 days
Frozen: 1 year
CSF
Room temperature: 72 hours
Refrigerated: 28 days
Frozen: 28 days
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Turbid • Bacterial contamination
Methodology
Immunofluorescence Assay (IFA)
FDA Status
This test was developed and its analytical performance characteristics have been determined by Athena Diagnostics. It has not been cleared or approved by FDA. This assay has been validated pursuant to the CLIA regulations and is used for clinical purposes.
Setup Schedule
Set up: Sun-Thurs a.m.; Report available: 5-7 days
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 |
Last Updated: June 22, 2023