ARUP's Laboratory Test Directory

Heat Shock Protein 70 (68 kDa), IgG by Western Blot : 0097338

Mnemonic: 68KD HSP

Ordering Recommendation: Not recommended for evaluation of general hearing loss.
Methodology: Qualitative Western Blot
Performed: Thu
Reported: 1-8 days
Specimen Required: Collect: Serum separator tube or plain red.

Specimen Preparation: Transfer 0.5 mL serum to an ARUP Standard Transport Tube. (Min: 0.1 mL)

Storage/Transport Temperature: Refrigerated.

Unacceptable Conditions: Specimens collected with anticoagulants or preservatives. Hemolyzed or lipemic specimens. Specimens with large clots or bacterial growth present.

Stability (collection to initiation of testing): Ambient: 48 hours; Refrigerated: 2 weeks; Frozen: 1 year
Reference Interval:
Negative
Interpretive Data: 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.

See Compliance Statement B: www.aruplab.com/CS
CPT Code(s): 84182
Cross References: 68KD (Heat Shock Protein 70 (68 kDa), IgG by Western Blot), Anticochlear (Heat Shock Protein 70 (68 kDa), IgG by Western Blot), HSP 70 Ab (Heat Shock Protein 70 (68 kDa), IgG by Western Blot), Inner Ear Antibody (Heat Shock Protein 70 (68 kDa), IgG by Western Blot)