Myositis

Focused antibody testing to diagnose, classify disease, and tailor treatment

The use of myositis-specific antibody (MSA) testing is an important tool in the diagnosis and classification of idiopathic inflammatory myopathies (IIM) subtypes. Myositis specific antibodies are essential for differentiating IIM subtypes and enables early disease detection and provides valuable insights to guide prognosis and treatment selection. Our focused MSA panel equips healthcare professionals with individualized information to reduce diagnostic uncertainty and set their patients on the best treatment path.

Myositis antibody test menu

Myositis antibody evaluation  

Our focused antibody panel includes only specific antibodies associated with IIM, enabling rapid answers that expedite diagnosis and treatment.

Key testing

Advantages

  • Enables early detection of IIM, particularly atypical or severe cases.
  • Methodologies were selected to optimize the accuracy and reliability of antibody detection to guide prognosis and tailor disease management.
    • Included antibodies were carefully selected for their direct associations to IIM subtypes.
    • MSAs are essential for differentiating IIM, which include dermatomyositis, polymyositis, inclusion body myositis, necrotizing autoimmune myopathy, and anti-synthetase syndrome.
    • MSAs enable precise phenotyping and stratification of IIM subtypes, providing insights into associated extra muscular disease activity, disease prognosis, and therapeutic responses.
  • Reduces diagnostic uncertainty.
  • Provides industry-leading time to results of 3–7 days.
  • If IFA patterns indicate signal recognition particle (SRP) antibodies, then SRP IFA titer and SRP54 immunoblot will be performed at an additional charge.

References
  1. Chinoy H, Fertig N, Oddis CV, Ollier WE, Cooper RG. The diagnostic utility of myositis autoantibody testing for predicting the risk of cancer-associated myositis. Ann Rheum Dis. 2007;66(10):1345-1349
  2. Betteridge Z, McHugh N. Myositis-specific autoantibodies: an important tool to support the diagnosis of myositis. J Intern Med. 2016;280(1):8-23
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