BACK TOTOP Browse A-ZSearchBrowse A-ZABCDEFGHIJKLMNOPQRSTUVWXYZ0-9 E-mail FormEmail ResultsName:Email address:Recipients Name:Recipients address:Message: Print-FriendlyBookmarksbookmarks-menuAcetylcholine receptor antibodyAcetylcholine receptor antibody is a protein found in the blood of many people with myasthenia gravis. The antibody affects the part of nerve cells that send signals from nerves to muscles.Myasthenia gravisMyasthenia gravis is a neuromuscular disorder. Neuromuscular disorders involve the muscles and the nerves that control them.ImageRead Article Now Book Mark Article AntibodyAn antibody is a protein produced by the body's immune system when it detects harmful substances, called antigens. Examples of antigens include micr...ImageRead Article Now Book Mark Article This article discusses the blood test for acetylcholine receptor antibody. How the Test is Performed A blood sample is needed. Most of the time, blood is drawn from a vein located on the inside of the elbow or the back of the hand.Drawn from a veinVenipuncture is the collection of blood from a vein. It is most often done for laboratory testing.ImageRead Article Now Book Mark Article How to Prepare for the Test Most of the time you do not need to take special steps before this test. How the Test will Feel You may feel slight pain or a sting when the needle is inserted. You may also feel some throbbing at the site after the blood is drawn. Why the Test is Performed This test is used to help diagnose myasthenia gravis.Myasthenia gravisMyasthenia gravis is a neuromuscular disorder. Neuromuscular disorders involve the muscles and the nerves that control them.ImageRead Article Now Book Mark Article Normal Results Normally, there is no acetylcholine receptor antibody (or less than 0.05 nmol/L) in the bloodstream.Note: Normal value ranges may vary slightly among different laboratories. Talk to your doctor about the meaning of your specific test results.The example above shows the common measurement for results for these tests. Some laboratories use different measurements or may test different specimens. What Abnormal Results Mean An abnormal result means acetylcholine receptor antibody has been found in your blood. It confirms the diagnosis of myasthenia gravis in people who have symptoms. Nearly one half of people with myasthenia gravis that is limited to their eye muscles (ocular myasthenia gravis) have this antibody in their blood. This antibody can also be present in the blood of people who have a thymoma, with or without myasthenia gravis.However, the lack of this antibody does not rule out myasthenia gravis. About 1 in 5 people with myasthenia gravis do not have signs of this antibody in their blood. Your health care provider may also consider testing you for the muscle specific kinase (MuSK) or other antibodies.Open ReferencesReferencesEvoli A, Vincent A. Disorders of neuromuscular transmission. In: Goldman L, Schafer AI, eds. Goldman-Cecil Medicine. 26th ed. Philadelphia, PA: Elsevier; 2020:chap 394.Guptill JT, Sanders DB. Disorders of neuromuscular transmission. In: Jankovic J, Mazziotta JC, Pomeroy SL, Newman NJ, eds. Bradley and Daroff's Neurology in Clinical Practice. 8th ed. Philadelphia, PA: Elsevier; 2022:chap 108.AllVideoImagesTogBlood test - illustration Blood is drawn from a vein (venipuncture), usually from the inside of the elbow or the back of the hand. A needle is inserted into the vein, and the blood is collected in an air-tight vial or a syringe. Preparation may vary depending on the specific test.Blood testillustrationCentral nervous system and peripheral nervous system - illustration The central nervous system comprises the brain and spinal cord. The peripheral nervous system includes nerves outside the brain and spinal cord.Central nervous system and peripheral nervous systemillustrationPtosis - drooping of the eyelid - illustration Drooping of the eyelid is called ptosis. Ptosis may result from damage to the nerve that controls the muscles of the eyelid, problems with the muscle strength (as in myasthenia gravis), or from swelling of the lid.Ptosis - drooping of the eyelidillustrationBlood test - illustration Blood is drawn from a vein (venipuncture), usually from the inside of the elbow or the back of the hand. A needle is inserted into the vein, and the blood is collected in an air-tight vial or a syringe. Preparation may vary depending on the specific test.Blood testillustrationCentral nervous system and peripheral nervous system - illustration The central nervous system comprises the brain and spinal cord. The peripheral nervous system includes nerves outside the brain and spinal cord.Central nervous system and peripheral nervous systemillustrationPtosis - drooping of the eyelid - illustration Drooping of the eyelid is called ptosis. Ptosis may result from damage to the nerve that controls the muscles of the eyelid, problems with the muscle strength (as in myasthenia gravis), or from swelling of the lid.Ptosis - drooping of the eyelidillustration Tests for Acetylcholine receptor antibody Acetylcholine receptor antibodyRelated Information Myasthenia gravis(Condition) Review Date: 4/29/2023 Reviewed By: Joseph V. Campellone, MD, Department of Neurology, Cooper Medical School of Rowan University, Camden, NJ. Review provided by VeriMed Healthcare Network. Also reviewed by David C. Dugdale, MD, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team. 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Acetylcholine receptor antibodyAcetylcholine receptor antibody is a protein found in the blood of many people with myasthenia gravis. The antibody affects the part of nerve cells that send signals from nerves to muscles.Myasthenia gravisMyasthenia gravis is a neuromuscular disorder. Neuromuscular disorders involve the muscles and the nerves that control them.ImageRead Article Now Book Mark Article AntibodyAn antibody is a protein produced by the body's immune system when it detects harmful substances, called antigens. Examples of antigens include micr...ImageRead Article Now Book Mark Article This article discusses the blood test for acetylcholine receptor antibody. How the Test is Performed A blood sample is needed. Most of the time, blood is drawn from a vein located on the inside of the elbow or the back of the hand.Drawn from a veinVenipuncture is the collection of blood from a vein. It is most often done for laboratory testing.ImageRead Article Now Book Mark Article How to Prepare for the Test Most of the time you do not need to take special steps before this test. How the Test will Feel You may feel slight pain or a sting when the needle is inserted. You may also feel some throbbing at the site after the blood is drawn. Why the Test is Performed This test is used to help diagnose myasthenia gravis.Myasthenia gravisMyasthenia gravis is a neuromuscular disorder. Neuromuscular disorders involve the muscles and the nerves that control them.ImageRead Article Now Book Mark Article Normal Results Normally, there is no acetylcholine receptor antibody (or less than 0.05 nmol/L) in the bloodstream.Note: Normal value ranges may vary slightly among different laboratories. Talk to your doctor about the meaning of your specific test results.The example above shows the common measurement for results for these tests. Some laboratories use different measurements or may test different specimens. What Abnormal Results Mean An abnormal result means acetylcholine receptor antibody has been found in your blood. It confirms the diagnosis of myasthenia gravis in people who have symptoms. Nearly one half of people with myasthenia gravis that is limited to their eye muscles (ocular myasthenia gravis) have this antibody in their blood. This antibody can also be present in the blood of people who have a thymoma, with or without myasthenia gravis.However, the lack of this antibody does not rule out myasthenia gravis. About 1 in 5 people with myasthenia gravis do not have signs of this antibody in their blood. Your health care provider may also consider testing you for the muscle specific kinase (MuSK) or other antibodies.Open ReferencesReferencesEvoli A, Vincent A. Disorders of neuromuscular transmission. In: Goldman L, Schafer AI, eds. Goldman-Cecil Medicine. 26th ed. Philadelphia, PA: Elsevier; 2020:chap 394.Guptill JT, Sanders DB. Disorders of neuromuscular transmission. In: Jankovic J, Mazziotta JC, Pomeroy SL, Newman NJ, eds. Bradley and Daroff's Neurology in Clinical Practice. 8th ed. Philadelphia, PA: Elsevier; 2022:chap 108.