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HelpCatalog ID Auto Enc CSF Autoimmune Encephalitis Reflex Panel, CSF
Additional Codes
CPOE: Ref Autoimmune Encephalitis Reflex Panel, CSF
DOE: Ref Auto Enc CSF
Specimen
CSF, three (3) 1.0 mL aliquots in separate transport tubes, frozen
Rejection Criteria
Non-CSF specimen, contaminated specimen, specimen at room temperature >24 hours, specimen refrigerated >7 days, insufficient quantity, unlabelled specimen
Interpretative Information
Aids in the differential evaluation of encephalitis of unknown origin with subacute onset of seizures, confusion, memory loss, and/or behavioral change.
If NMDA CSF antibody IgG is positive, then titer will be added. Additional charges apply.
If AQP4 CSF antibody IgG is positive, then titer will be added. Additional charges apply.
If AMPA CSF antibody IgG is positive, then titer will be added. Additional charges apply.
If GABA-BR CSF antibody IgG is positive, then titer will be added. Additional charges apply.
If CASPR2 CSF antibody IgG is positive, then titer will be added. Additional charges apply.
If LGI1 CSF antibody IgG is positive, then titer will be added. Additional charges apply.
If DPPX CSF antibody IgG is positive, then titer will be added. Additional charges apply.
If IgLON5 CSF antibody IgG is positive, then titer will be added. Additional charges apply.
If GABA-AR CSF antibody IgG is positive, then titer will be added. Additional charges apply.
If mGluR1 CSF antibody IgG is positive, then titer will be added. Additional charges apply.
Performing Lab
ARUP Laboratories
Turn-Around-Time
3-10 days (performed on Tuesdays)
Reference Values
| Component | Reference Interval |
|---|---|
| Glutamic Acid Decarboxylase Antibody CSF | 0.0-5.0 IU/mL |
| N-methyl-D-Aspartate Receptor Ab, CSF | Less than 1:1 |
| Neuromyelitis Optica/AQP4-IgG, CSF | Less than 1:1 |
| AMPA Receptor Ab IgG Screen, CSF | Less than 1:1 |
| GABA-B Receptor Ab IgG Screen, CSF | Less than 1:1 |
| Voltage-Gated Potassium Channel Ab, CSF | Less than 1:1 |
| CASPR2 Ab IgG Screen by IFA, CSF | Less than 1:1 |
| LGI1 Ab IgG Screen by IFA, CSF | Less than 1:1 |
| DPPX Ab IgG CBA IFA Screen, CSF | Less than 1:1 |
| IgLON5 Ab IgG CBA-IFA Screen, CSF | Less than 1:1 |
| GABA-AR Ab IgG CBA-IFA Screen, CSF | Less than 1:1 |
| mGluR1 Ab IgG CBA-IFA Screen, CSF | Less than 1:1 |