5093 – DotDiver Myositis 12

The DotDiver Myositis 12 is a qualitative dot immunoassay for the determination of IgG antibodies against nuclear and cytoplasmic antigens (Jo-1, PL-7, PL-12, EJ, SRP, Mi-2, MDA-5, TIF1-γ, SSA/Ro52kD, SAE1, SAE2 and NXP-2) in human serum. The DotDiver Myositis 12 is intended as an aid in the diagnosis of autoimmune myositis diseases in conjunction with other clinical and laboratory findings.

Polymyositis, an idiopathic inflammatory muscle disorder with unclear etiology, is characterized by muscle weakness, atrophy of peripheral muscles, biochemical and electromyographic signs of muscle damage, with skin alterations. Autoantibodies to t-RNA synthetases like Jo-1, PL-7, PL-12 and EJ are found in a large group of myositis patients. Other specific antibodies associated with polymyositis, including dermatomyositis are SRP, Mi-2, TIF1-γ.

Dot immunoassays are frequently used for the determination of specific antibodies directed against multiple antigens. The test strips are coated with various antigens in consistent intervals. If antibodies are present in the patient´s sample, they bind to the respective antigens. A secondary antibody conjugated with the enzyme alkaline phosphatase detects the generated immune complexes. A colorless substrate is converted into a colored, insoluble product. The signal intensity of the precipitated reaction product is proportional to the antibody activity in the sample.

The DotDiver CeliAK IgA is designed for semi-automated use with the DotDiver instrument. The GA Generic Assays DotDiver2.0 is a fully automated processor of Line and Dot immunoassays. The small footprint renders the device an ideal solution for laboratories with small space. With a unique software design, the device provides a completely hands-free experience for quantitative, semi-quantitative and qualitative testing via repeated diving of the antigen coated strips into the ready to use cartridges. This special setup provides an optimal reaction environment with reduced assay processing and result analysis time for up to 24 different tests or samples simultaneously.