Neuroimmunology Antibody Follow-up, Spinal Fluid

Reporting Name

Neuroimmunology Ab Follow-up, CSF

Useful For

Monitoring patients who have previously tested positive for 1 or more antibodies within the past 5 years in a Mayo Clinic Neuroimmunology Laboratory spinal fluid evaluation

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Specimen Type

CSF

Ordering Guidance

This test is only appropriate for follow-up in patients who have previously tested positive in a spinal fluid test. If patients have not previously been positive in a spinal fluid test, order one of the following:

-DMC2 / Dementia, Autoimmune/Paraneoplastic Evaluation, Spinal Fluid

-ENC2 / Encephalopathy, Autoimmune/Paraneoplastic Evaluation, Spinal Fluid

-EPC2 / Epilepsy, Autoimmune/Paraneoplastic Evaluation, Serum

-MAC1 / Myelopathy, Autoimmune/Paraneoplastic Evaluation, Spinal Fluid

-MDC2 / Movement Disorder, Autoimmune/Paraneoplastic Evaluation, Spinal Fluid

-PCDEC / Pediatric Autoimmune Encephalopathy/CNS Disorder Evaluation, Spinal Fluid

-SPPC / Stiff-Person Spectrum Disorders/PERM Evaluation, Spinal Fluid

This test should not be requested in patients who have recently received radioisotopes, therapeutically or diagnostically, because of potential assay interference. The specific waiting period before specimen collection will depend on the isotope administered, the dose given, and the clearance rate in the individual patient. Specimens will be screened for radioactivity prior to analysis. Radioactive specimens received in the laboratory will be held 1 week and assayed if sufficiently decayed or canceled if radioactivity remains.

Specimen Required

Container/Tube: Sterile vial

Preferred: Vial number 1

Acceptable: Any vial

Specimen Volume: 4 mL

Specimen Minimum Volume

2 mL

Specimen Stability Information

Specimen Type	Temperature	Time
CSF	Refrigerated (preferred)	28 days
	Frozen	28 days
	Ambient	72 hours

Reference Values

Test ID	Reporting Name	Methodology*	Reference Value
AGNBC	AGNA-1 Immunoblot, CSF	IB	Negative
AINCC	Alpha Internexin CBA, CSF	CBA	Negative
AMPCC	AMPA-R Ab CBA, CSF	CBA	Negative
AMPHC	Amphiphysin Ab, CSF	IFA	Negative
AMIBC	Amphiphysin Immunoblot, CSF	IB	Negative
AN1BC	ANNA-1 Immunoblot, CSF	IB	Negative
AN2BC	ANNA-2 Immunoblot, CSF	IB	Negative
AGN1C	Anti-Glial Nuclear Ab Type 1	IFA	Negative
ANN1C	Anti-Neuronal Nuclear Ab, Type 1	IFA	Negative
ANN2C	Anti-Neuronal Nuclear Ab, Type 2	IFA	Negative
ANN3C	Anti-Neuronal Nuclear Ab, Type 3	IFA	Negative
APBCC	AP3B2 CBA, CSF	CBA	Negative
APBIC	AP3B2 IFA, CSF	IFA	Negative
CS2CC	CASPR2-IgG CBA, CSF	CBA	Negative
CRMWC	CRMP-5-IgG Western Blot, CSF	WB	Negative
CRMC	CRMP-5-IgG, CSF	IFA	Negative
DPPCC	DPPX Ab CBA, CSF	CBA	Negative
DPPIC	DPPX Ab IFA, CSF	IFA	Negative
GABCC	GABA-B-R Ab CBA, CSF	CBA	Negative
GFACC	GFAP CBA, CSF	CBA	Negative
GFAIC	GFAP IFA, CSF	IFA	Negative
GRFCC	GRAF1 CBA, CSF	CBA	Negative
GRFIC	GRAF1 IFA, CSF	IFA	Negative
IG5CC	IgLON5 CBA, CSF	CBA	Negative
IG5IC	IgLON5 IFA, CSF	IFA	Negative
ITPCC	ITPR1 CBA, CSF	CBA	Negative
ITPIC	ITPR1 IFA, CSF	IFA	Negative
LG1CC	LGI1-IgG CBA, CSF	CBA	Negative
GL1CC	mGluR1 Ab CBA, CSF	CBA	Negative
GL1IC	mGluR1 Ab IFA, CSF	IFA	Negative
NCDCC	Neurochondrin CBA, CSF	CBA	Negative
NCDIC	Neurochondrin IFA, CSF	IFA	Negative
NFHCC	NIF Heavy Chain CBA, CSF	CBA	Negative
NIFIC	NIF IFA, CSF	IFA	Negative
NFLCC	NIF Light Chain CBA, CSF	CBA	Negative
NMDCC	NMDA-R Ab CBA, CSF	CBA	Negative
PC1BC	PCA-1 Immunoblot, CSF	IB	Negative
PCTBC	PCA-Tr Immunoblot, CSF	IB	Negative
PCTRC	Purkinje Cell Cytoplasmc Ab Type Tr	IFA	Negative
PCA1C	Purkinje Cell Cytoplasmic Ab Type 1	IFA	Negative
PCA2C	Purkinje Cell Cytoplasmic Ab Type 2	IFA	Negative
SP5CC	Septin-5 CBA, CSF	CBA	Negative
SP5IC	Septin-5 IFA, CSF	IFA	Negative
SP7CC	Septin-7 CBA, CSF	CBA	Negative
SP7IC	Septin-7 IFA, CSF	IFA	Negative
PDEIC	PDE10A Ab IFA, CSF	IFA	Negative
T46CC	TRIM46 Ab CBA, CSF	CBA	Negative
T46IC	TRIM46 Ab IFA, CSF	IFA	Negative

*Methodology abbreviations:

CBA: Cell-binding assay

IB: Immunoblot

IFA: Immunofluorescence assay

WB: Western blot (WB)

Day(s) Performed

Varies

CPT Code Information

84182 AGNBC (if appropriate)

86255 AINCC (if appropriate)

86255 AMPCC (if appropriate)

86255 AMPHC (if appropriate)

84182 AMIBC (if appropriate)

84182 AN1BC (if appropriate)

84182 AN2BC (if appropriate)

86255 AGN1C (if appropriate)

86255 ANN1C (if appropriate)

86255 ANN2C (if appropriate)

86255 ANN3C (if appropriate)

86255 APBCC (if appropriate)

86255 APBIC (if appropriate)

86255 CS2CC (if appropriate)

84182 CRMWC (if appropriate)

86255 CRMC (if appropriate)

86255 DPPCC (if appropriate)

86255 DPPIC (if appropriate)

86255 GABCC (if appropriate)

86255 GFACC (if appropriate)

86255 GFAIC (if appropriate)

86255 GRFCC (if appropriate)

86255 GRFIC (if appropriate)

86255 IG5CC (if appropriate)

86255 IG5IC (if appropriate)

86255 ITPCC (if appropriate)

86255 ITPIC (if appropriate)

86255 LG1CC (if appropriate)

86255 GL1CC (if appropriate)

86255 GL1IC (if appropriate)

86255 NCDCC (if appropriate)

86255 NCDIC (if appropriate)

86255 NFHCC (if appropriate)

86255 NIFIC (if appropriate)

86255 NFLCC (if appropriate)

86255 NMDCC (if appropriate)

84182 PC1BC (if appropriate)

84182 PCTBC (if appropriate)

86255 PCTRC (if appropriate)

86255 PCA1C (if appropriate)

86255 PCA2C (if appropriate)

86255 PDEIC (if appropriate)

86255 SP5CC (if appropriate)

86255 SP5IC (if appropriate)

86255 SP7CC (if appropriate)

86255 SP7IC (if appropriate)

86255 T46CC (if appropriate)

86255 T46IC (if appropriate)

LOINC Code Information

Test ID	Test Order Name	Order LOINC Value
PNEFC	Neuroimmunology Ab Follow-up, CSF	80615-8

Result ID	Test Result Name	Result LOINC Value
84299	Neuroimmunology Ab Follow-up, CSF	80615-8

Report Available

Varies

Method Name

AMPHC, AGN1C, ANN1C, ANN2C, ANN3C, PCTRC, PCA1C, PCA2C, DPPTC, GL1IC, GFAIC, IG5IC, ITPIC, GRFIC, NIFIC, APBIC, SP5IC, SP7IC, CRMC, NCDIC, DPPIC, PDEIC, T46IC: Indirect Immunofluorescence Assay (IFA)

AMPCC, CS2CC, GABCC, LG1CC, NMDCC, DPPCC, GL1CC, GFACC, IG5CC, ITPCC, GRFCC, NFLCC, NFHCC, AINCC, APBCC, NCDCC, SP5CC, SP7CC, T46CC: Cell Binding Assay (CBA)

CRMWC: Western Blot (WB)

AN1BC, AN2BC, AMIBC, PC1BC, PCTBC, AGNBC: Immunoblot (IB)

Test Classification

This test was developed and its performance characteristics determined by Mayo Clinic in a manner consistent with CLIA requirements. It has not been cleared or approved by the US Food and Drug Administration.

Forms

If not ordering electronically, complete, print, and send a Neurology Specialty Testing Client Test Request (T732) with the specimen.

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Test Code PNEFC Neuroimmunology Antibody Follow-up, Spinal Fluid