Author disclosure: No relevant financial affiliations. The FM/a Test is a blood test used for the diagnosis of fibromyalgia. It is available for use in patients of any age who have at least four of the typical symptoms of fibromyalgia.1 Accuracy Fibromyalgia has historically been diagnosed using the American College of Rheumatology clinical criteria (Table 1).2 The FM/a Test is a cytokine assay of in vitro stimulated peripheral blood mononuclear cells. Production of cytokines by stimulated immune cells in patients with fibromyalgia has been shown to be significantly different from that of healthy…
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