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Test Code PC1TS Purkinje Cell Cytoplasmic Antibody Type 1 (PCA-1) Titer, Serum


Specimen Required


Only orderable as a reflex. For further information see:

PAVAL / Paraneoplastic, Autoantibody Evaluation, Serum

ENS2 / Encephalopathy, Autoimmune/Paraneoplastic Evaluation, Serum

MDS2 / Movement Disorder, Autoimmune/Paraneoplastic Evaluation, Serum

MAS1 / Myelopathy, Autoimmune/Paraneoplastic Evaluation, Serum

AIAES / Axonal Neuropathy, Autoimmune/Paraneoplastic Evaluation, Serum


Useful For

Identifying female patients whose subacute cerebellar degeneration or peripheral neuropathy is due to a remote (autoimmune) effect of gynecologic or breast carcinoma

 

Reporting an end titer result from serum specimens

Method Name

Only orderable as a reflex. For further information see:

PAVAL / Paraneoplastic, Autoantibody Evaluation, Serum

ENS2 / Encephalopathy, Autoimmune/Paraneoplastic Evaluation, Serum

MDS2 / Movement Disorder, Autoimmune/Paraneoplastic Evaluation, Serum

MAS1 / Myelopathy, Autoimmune/Paraneoplastic Evaluation, Serum

AIAES / Axonal Neuropathy, Autoimmune/Paraneoplastic Evaluation, Serum

 

Indirect Immunofluorescence Assay (IFA)

Reporting Name

PCA-1 Titer, S

Specimen Type

Serum

Specimen Minimum Volume

0.6 mL

Specimen Stability Information

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

Reject Due To

Gross hemolysis Reject
Gross lipemia Reject
Gross icterus Reject

Clinical Information

Purkinje cell antibody type 1 (PCA-1), also known as anti-Yo, binds to Purkinje cell cytoplasm in a characteristic pattern by indirect immunofluorescence. It is found in the serum, and usually cerebrospinal fluid, of patients with paraneoplastic cerebellar degeneration associated with gynecological or breast carcinoma. It is also found in some patients with sensory, sensorimotor neuropathy, or motor neuropathy with gynecologic cancer. Almost all (99%) seropositive patients are women.

Reference Values

Only orderable as a reflex. For further information see:

PAVAL / Paraneoplastic, Autoantibody Evaluation, Serum

ENS2 / Encephalopathy, Autoimmune/Paraneoplastic Evaluation, Serum

MDS2 / Movement Disorder, Autoimmune/Paraneoplastic Evaluation, Serum

MAS1 / Myelopathy, Autoimmune/Paraneoplastic Evaluation, Serum

AIAES / Axonal Neuropathy, Autoimmune/Paraneoplastic Evaluation, Serum

 

<1:240

Neuron-restricted patterns of IgG staining that do not fulfill criteria for Purkinje cell cytoplasmic antibody type 1 may be reported as "unclassified antineuronal IgG." Complex patterns that include nonneuronal elements may be reported as "uninterpretable."

Day(s) Performed

Monday through Sunday

Report Available

6 to 8 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