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HelpTest Code NMDAC NMDA Receptor Antibody, CSF
Laboratory Code
LAB2221
Specimen Requirements
Specimen Type: Cerebrospinal Fluid (CSF)
Container/Tube: Screw Capped Sterile Container
Volume: 0.5 mL CSF
Minimum Volume: 0.5 mL CSF
Collection Instructions: Centrifuge CSF specimen to remove any cellular protein if present.
Specimen Stability
| Specimen Type | CSF |
|---|---|
| Ambient | 2 days |
| Refrigerate | 2 weeks (preferred) |
| Frozen | 1 year |
Methodology
Immunofluorescence
Days and Times Performed
Alternate Tuesday, TAT 1 - 15 days
Specimen Condition
| Haemolysis | OK |
|---|---|
| Icterus | OK |
| Lipaemia | OK |
| Others | Not applicable |
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.
Service Code
33312
LOINC Code Information
82988-7
Alias
NMDA-R Ab CBA
Update
Last updated 21/02/2025