acetylcholine receptor antibody test

acetylcholine receptor (AChR) antibody test

one of three blood tests for AChR to diagnose myasthenia gravis, the most sensitive of which is the AChR-modulating antibody test and the least sensitive of which is the AChR-blocking antibody test. The test used most often is the AChR-binding antibody test.
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A negative acetylcholine receptor antibody test will rule out myasthenia gravis, imaging of the spine can rule out cervical spondylosis, and electrophysiologic testing helps eliminate the other conditions (table 1 (4)).