What types of laboratory tests may be used to diagnose Fibromyalgia?

Some specific blood tests that have been used to diagnose fibromyalgia include a complete blood count (CBC) to rule out other possible disorders such as hypoglycemia, thyroid function, and anemia. An erythrocyte sedimentation rate (ESR) test may be used to determine if inflammation is present. Your doctor may also ask for another blood test to look for rheumatoid factor, an abnormal protein in the blood present in 70 to 80 percent of patients with rheumatoid arthritis. You may be tested for the presence of antinuclear antibody (ANA), an abnormal protein in the blood and is most commonly found with systemic lupus erythematosis (SLE). The nuclear magnetic resonance (NMR) test spectroscopy, a test that determines how much ATP is at the muscle site, may be used to determine cellular inactivity that results from fibromyalgia. A sleep electoencephalogram, or sleep EEG, may be used to determine if abnormal sleep patterns are present.

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