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Test Name:
Heat Shock Protein 70 (68 kDa) IgG Antibody, by Western Blot
- SBMF No:
44327 - Performance Lab Name:
ARUP Laboratories - Test Mnemonic:
68KD HSP - ABN:
Required – Not FDA-Approved - CPT Code:
84182 - LOINC Code:
43597-4 - Ref Lab Test No:
0097338 - Also Known As:
68 KD (Heat Shock Protein) - Spec Type:
Serum - Spec Container:
Gold top (SST) or red top (serum) tube - Pref Vol:
0.5 mL - Min Vol:
0.2 mL
Pediatric Collection: 0.1 mL - Fasting:
No - Spec Collect:
Routine venipuncture
Do not use anticoagulants or preservatives - Spec Process:
Clot 30 minutes
Promptly centrifuge 15 minutes
Immediately transfer serum to separate plastic tube - Spec Store Transport:
Refrigerated - Spec Stability:
2 days room temperature (20-30°C)
2 weeks refrigerated (2-8°C)
1 year frozen (-20°C) – Do not use frost-free units that undergo repeated freeze/thaw cycles - Spec Reject:
Hemolyzed or lipemic sample
Sample with large clot present or bacterial growth
Sample collected with anticoagulant or perservative - Methodology:
Western Blot - Use:
Western blot assay for HSP70 (68 kDa), IgG antibody may be utilized in predicting corticosteroid responsiveness in patients with idiopathic rapidly progressive sensorineural hearing loss. Indeterminate results should be repeated using a fresh specimen collected after 10-14 days. Other autoimmune diseases may also produce positive results. - Reference Range:
Negative - Additional Test Info:
The performance characteristics of this test were validated by ARUP Laboratories. The U.S. Food and Drug Administration (FDA) has not approved or cleared this test. The results are not intended to be used as the sole means for clinical diagnosis or patient management decisions. ARUP is authorized under Clinical Laboratory Improvement Amendments (CLIA) and by all states to perform high-complexity testing. - Day Run:
Thu - Time Reported:
2-9 days - Test Type:
IMMUNOLOGY
