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Autoimmune Encephalopathy CSF

Order Name Autoimm Encph CSF
Test Number: 5197167
Revision Date 04/02/2026
Test Name Methodology LOINC Code
Autoimmune Encephalopathy CSF
Immunofluorescence, Immunoblot 94818-2 
SPECIMEN REQUIREMENTS
Specimen Specimen Volume (min) Specimen Type Specimen Container Transport Environment
Preferred 2 mL (1 mL) CSF (Cerebrospinal Fluid) Sterile Screwtop Container Room Temperature
Instructions Stability Requirements: Room temperature: 14 days, Refrigerated 14 days, Frozen 14 days. (Freeze/thaw cycles Stable x3)
Cause for Rejection: Gross hemolysis, grossly lipemic, gross icterus

This is for Ascension Local Area Hospitals Only
Send to Laboratory Immediately..!
GENERAL INFORMATION
Expected TAT 4 Days  
Clinical Use This test is used for the detection of antineuronal autoantibodies that help in the diagnosis of paraneoplastic syndromes and autoimmune encephalopathies and related conditions. This test should be considered for the differential evaluation of encephalopathy of unknown origin with subacute onset of seizures, confusion, memory loss and/or behavioral change. 
Performing Labcorp Test Code 505625 
Notes
Result Code Result Name Result Long Name LOINC Code
5197292 Auto Enceph Intp Autoimmune Encephalopathy Interp 56850-1
6905714 Hu Ab CSF Hu Ab CSF 44768-0
5194522 Ri Ab CSF Ri Ab CSF 56959-0
5197293 Antineuronal T3 CSF Antineuronal nuclear Ab Type 3 CSF 90836-8
6905708 Yo Ab CSF Yo Ab CSF 14247-1
5197294 Purkinje Ab T2 CSF Purkinje Cell Cyto Ab Type 2 CSF 90843-4
5197295 Purkinje Ab Tr CSF Purkinje Cell Cyto Ab Type Tr CSF 90845-9
5197296 Amphiphysin Ab CSF Amphiphysin Antibody CSF 90815-2
5197297 CRMP-5 IgG CSF CRMP-5 IgG CSF 63216-6
5197298 AGNA-1 CSF AGNA-1 CSF 90827-7
5197299 DPPX Ab CSF DPPX Antibody CSF 82989-5
5197300 mGluR1 Ab CSF mGluR1 Antibody CSF 93500-7
5197301 IgLON5 Ab CSF IgLON5 Antibody CSF 96481-7
5197302 Ma2/Ta Ab CSF Ma2/Ta Antibody CSF 90832-7
5197303 Zic4 Ab CSF Zic4 Antibody CSF 101229-3
5197304 DNER Ab CSF DNER Antibody CSF 90844-2
5197305 ITPR1 Ab CSF ITPR1 Antibody CSF 96467-6
5197306 AMPA-R1 Cb IFA CSF AMPA-R-1 Cell-based IFA CSF 90811-1
5197307 AMPA-R2 Cb IFA CSF AMPA-R-2 Cell-based IFA CSF 93491-9
5197308 GABA-B Rec Cb IFA CSF GABA-B Receptor Cell-based IFA CSF 93426-5
3488472 NMDA IgG CSF N-methyl-D-Aspartate Receptor Ab, CSF 82988-7
5197309 GAD65 Ab Cb IFA CSF GAD65 Antibody, Cell-based IFA CSF 94711-9
5197310 CASPR2 Ab Cb IFA CSF CASPR2 Antibody,Cell-based IFA CSF 90820-2
5197311 LGI1 Ab Cb IFA CSF LGI1 Antibody, Cell-based IFA CSF 90830-1

Possible Reflex Tests
Reflex Order Code Reflex Name Result Code Result Name LOINC Code CPT Code
5197312 .Rflx Anti-Hu Ab Line Blot CSF 5197312 Hu Ab Lb CSF n/a 84182
5197313 .Rflx Anti-Ri Ab Line Blot CSF 5197313 Ri Ab Lb CSF n/a 84182
5197314 .Rflx Anti-Yo Ab Line Blot CSF 5197314 Yo Ab Lb CSF 94272-2 84182
5197315 .Rflx PCA-Tr Line Blot CSF 5197315 PCA-Tr Lb CSF 95596-3 84182
5197316 .Rflx Amphiphysin Line Blot CSF 5197316 Amphiphysin Lb CSF 57750-2 84182
5197317 .Rflx AGNA-1 Line Blot CSF 5197317 AGNA-1 Lb CSF 94383-7 84182
5197318 .Rflx DPPX Cell-based IFA CSF 5197318 DPPX Cb IFA CSF 101242-6 86255
5197319 .Rflx mGluR1 Cell-based IFA CSF 5197319 mGluR1 Cb IFA CSF 93498-4 86255
5197320 .Rflx AMPA-R-1 IF Titer CSF 5197320 AMPA-R1 IF Titer CSF 95604-5 86256
5197321 .Rflx AMPA-R-2 IF Titer CSF 5197321 AMPA-R2 IF Titer CSF n/a 86256
5197322 .Rflx GABA-B Receptor Antibody Titer CSF 5197322 GABA-B Ab Titer CSF n/a 86256
5194923 .Rflx NMDAR Antibody Titer CSF 5194923 NMDAR Titer CSF 90840-0 86256
5197323 .Rflx Anti-CASPR2 Antibody Titer CSF 5197323 CASPR2 Ab Titer CSF 90820-2 86256
5197324 .Rflx Anti-LGI1 Antibody Titer CSF 5197324 LGI1 Ab Titer CSF 90831-9 86256
5197325 .Rflx CRMP-5 IgG Line Blot CSF 5197325 CRMP-5 IgG Lb CSF 53707-6 84182
5197326 .Rflx ITPR1 Cell-based IFA CSF 5197326 ITPR1 Cb IFA CSF 96468-4 86255
5197327 .Rflx DNER Line Blot CSF 5197327 DNER Lb CSF n/a 84182
5197328 .Rflx Anti-GAD65 Antibody Titer CSF 5197328 GAD65 Ab Titer CSF n/a 86256
5197329 .Rflx Ma2/Ta Line Blot CSF 5197329 Ma2/Ta Line Blot CSF 90833-5 84182
5197330 .Rflx IgLON5 Cell-based IFA CSF 5197330 IgLON5 Cb IFA CSF 96481-7 86255
5197331 .Rflx Zic4 Line Blot CSF 5197331 Zic4 Line Blot CSF 88743-0 84182
5197332 .Rflx DPPX Antibody, Titer CSF 5197332 DPPX Ab Titer CSF n/a 86256
5197333 .Rflx mGluR1 IF Titer CSF 5197333 mGluR1 IF Titer CSF 94361-3 86256
5197334 .Rflx ITPR1 IF Titer CSF 5197334 ITPR1 IF Titer CSF 96468-4 86256
5197335 .Rflx IgLON5 IF Titer CSF 5197335 IgLON5 IF Titer CSF 96479-1 86256
CPT Code(s) 86255(x22), 86341 (If reflex test is performed, additional charges/CPT code(s) may apply.)
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