Test Overview
Test Methodology

Line Blot

Test Usage

Antibodies to inner ear antigen (68kD) occur in approximately 70% of patients with autoimmune hearing loss. The antibody tests to this 68kD antigen parallel with disease activity. In addition, a majority of patients positive for antibodies to 68kD are responsive to corticosteroid treatment. (Hirose et al: The Laryngoscope 109:1769-1999)

Reference Range *

Negative

Test Details
Analytic Time

5 - 19 days

Soft Order Code
68KD
MiChart Code
Autoimmune Inner Ear Ag (68 kD)
Synonyms
  • Autoimmune Inner Ear Antibody
  • Anti-Cochlear Antibody
  • Heat Shock Protein 70 Autoantibodies
  • Hsp 70 Antibody
  • 68KD
  • Autoimmune Inner Ear Ag
Laboratory
Sendout
Reference Laboratory
Mayo F68KD (91494) (IMMCO Diagnostics)
Section
Special Testing
Specimen Requirements
Collection

Collect specimen in a red top or SST tube. Centrifuge, aliquot serum into a plastic vial and freeze (preferred) or refrigerate.

Yellow Top Tube
Normal Volume
3 mL serum
Minimum Volume
2 mL serum
Storage Temperature
Frozen (preferred): 365 days; Refrigerated: 5 days; Room Temperature: 48 hours.
Additional Information

Test sent to Mayo Medical Laboratories; performed by IMMCO Diagnostics.

Billing
CPT Code
84182
Fee Code
20486
LOINC
34585-0
NY State Approved
No