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HelpTest Code NMDAR NMDA Receptor Antibody, serum
Additional Codes
| Epic Ordering Code | LAB2210 |
| NBS code | LBC08654 |
| Service code | 33311 |
Specimen Requirements
Submit the following:
| Container: |
| Red Top |
Processing Requirements
Allow specimen to clot for 30 mins and centrifuge within 2 hours
Specimen type: Serum
Volume: 0.5mL
Specimen Stability
| Specimen Type | Serum |
|---|---|
| Ambient | 2 days |
| Refrigerate | 2 weeks (preferred) |
| Frozen | 1 year |
Specimen Condition
| Haemolysis | OK |
|---|---|
| Icterus | OK |
| Lipaemia | OK |
| Others | Not applicable |
Methodology
Immunofluorescence
Days and Times Performed
Alternate Tuesday, TAT 1 - 15 days
Reference Interval
Negative
Testing Laboratory
National University Hospital
Clinical Chemistry, 67724346
Useful For
NMDA Receptor Antibodies are associated with anti-NMDAR encephalitis, a neurologic immune-mediated disease which typically presents with a flu-like prodromal phase, followed by psychiatric symptoms, abnormal movements, seizures, dysautonomia and decreased consciousness. Simultaneous testing of serum and cerebrospinal fluid (CSF) is recommended.
Update
Last updated 26/07/2026
LOINC Code Information
82981-2
Alias
NMDA-R Ab CBA