Anti Myeloperoxidase (MPO) Antibodies, Serum

1 Day(s)

Reference Range

Myeloperoxidase (MPO) is a hemoprotein that is abundantly expressed in neutrophils and secreted during their activation. Antibodies against MPO have been implicated in various types of vasculitis, most prominently crescentic glomerulonephritis and Churg-Strauss syndrome. They are detected as perinuclear ANCAs (pANCAs), as opposed to the cytoplasmic ANCAs (cANCAs) against proteinase 3 (PR3), which are strongly associated with Wegeners granulomatosis. LOW to MODERATE anti-Myeloperoxidase autoantibody levels are also reported in rheumatoid arthritis. Recently it was shown that Myeloperoxidase participates in the initiation and progression of cardiovascular disease. It possesses potent proinflammatory properties and may contribute directly to tissue injury.

Special Requirements

Separate serum from cells ASAP or within 2 hours of collection.

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