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Striational Antibodies

CPT

86255

Synonyms
  • Antistriated Muscle Antibodies

Test Details

Methodology

Immunofluorescence (IF)

Result Turnaround Time

2 - 4 days

Turnaround time is defined as the usual number of days from the date of pickup of a specimen for testing to when the result is released to the ordering provider. In some cases, additional time should be allowed for additional confirmatory or additional reflex tests. Testing schedules may vary.

Related Documents

Use

This test is recommended for differential evaluation of neuromuscular junction diseases including myasthenia gravis (MG).

Special Instructions

This assay currently is not available in New York state.

Limitations

This test was developed and its performance characteristics determined by Labcorp. It has not been cleared or approved by the Food and Drug Administration.

References

Lanska DJ, “Diagnosis of Thymoma in Myasthenics Using Antistriated Muscle Antibodies: Predictive Value and Gain in Diagnostic Certainty,” Neurology, 1991, 41(4):520-4.2011250

Custom Additional Information

Autoantibodies directed against the contractile elements of striated muscle are found in 30% of adult patients with myasthenia gravis and 80% of those with thymoma. These antibodies may also be detected in patients with: Lambert-Eaton myasthenic syndrome, small-cell lung carcinoma, breast carcinoma, patients treated with D-penicillamine, bone marrow transplant recipients having graft-versus-host disease, and autoimmune liver disorders.

Specimen Requirements

Specimen

Serum

Volume

1 mL

Minimum Volume

0.5 mL (Note: This volume does not allow for repeat testing.)

Container

Red-top tube or gel-barrier tube

Stability Requirements

TemperaturePeriod
Room temperature14 days
Refrigerated14 days
Frozen14 days
Freeze/thaw cyclesStable x3

Reference Range

Negative: <1:100

Storage Instructions

Maintain specimen at room temperature.

Causes for Rejection

Hemolyzed or lipemic serum

LOINC® Map

Order Code Order Code Name Order Loinc Result Code Result Code Name UofM Result LOINC
160184 Striation Abs, Serum 5372-8 161216 Striation Abs, Serum 5372-8
Order Code160184
Order Code NameStriation Abs, Serum
Order Loinc5372-8
Result Code161216
Result Code NameStriation Abs, Serum
UofM
Result LOINC5372-8