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Test Code SP7TS Septin-7 Antibody, Tissue Immunofluorescence Titer, Serum


Specimen Required


Only orderable as a reflex. For more information see:

-ENS2 / Encephalopathy, Autoimmune/Paraneoplastic Evaluation, Serum

-MDS2 / Movement Disorder, Autoimmune/Paraneoplastic Evaluation, Serum

-MAS1 / Myelopathy, Autoimmune/Paraneoplastic Evaluation, Serum


Useful For

Detecting septin-7 IgG in serum specimens

 

Reporting an end titer result from serum specimens

Testing Algorithm

If the indirect immunofluorescence pattern suggests septin-7, then aeptin-7 antibody by cell-binding assay and this test will be performed at an additional charge.

Method Name

Only orderable as a reflex. For more information see:

-ENS2 / Encephalopathy, Autoimmune/Paraneoplastic Evaluation, Serum

-MDS2 / Movement Disorder, Autoimmune/Paraneoplastic Evaluation, Serum

-MAS1 / Myelopathy, Autoimmune/Paraneoplastic Evaluation, Serum

 

Indirect Immunofluorescence Assay (IFA)

Reporting Name

Septin-7 IFA Titer, S

Specimen Type

Serum

Specimen Minimum Volume

See Specimen Required

Specimen Stability Information

Specimen Type Temperature Time Special Container
Serum Refrigerated (preferred) 28 days
  Frozen  28 days
  Ambient  72 hours

Reference Values

Only orderable as a reflex. For more information see:

-ENS2 / Encephalopathy, Autoimmune/Paraneoplastic Evaluation, Serum

-MDS2 / Movement Disorder, Autoimmune/Paraneoplastic Evaluation, Serum

-MAS1 / Myelopathy, Autoimmune/Paraneoplastic Evaluation, Serum

 

<1:240

Interpretation

Seropositivity for septin antibodies by indirect immunofluorescence assay is consistent with a diagnosis of autoimmune disease of the central nervous system. Cell-binding assay testing for septin-7 IgG is required to confirm the diagnosis.

Clinical Reference

Honorat JA, Miske R, Scharf M, et al: 416. Neuronal septin autoimmunity: Differentiated serological profiles and clinical findings. Ann Neurol. 2020 Oct;88(Suppl 25):S55. Abstract

Day(s) Performed

Monday through Sunday

Report Available

5 to 10 days

Performing Laboratory

Mayo Clinic Laboratories in Rochester

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.

CPT Code Information

86256

LOINC Code Information

Test ID Test Order Name Order LOINC Value
SP7TS Septin-7 IFA Titer, S 101456-2

 

Result ID Test Result Name Result LOINC Value
616115 Septin-7 IFA Titer, S 101456-2