Which test detects acetylcholine receptor antibodies?

Which test detects acetylcholine receptor antibodies?

• A. Acetylcholine receptor antibody
• B. ACTH stimulation test
• C. Lead levels
• D. Thyroid profile

Answer: (A)

This question focuses on diagnosing an autoimmune weakness by looking for the specific antibody that targets the neuromuscular junction. The acetylcholine receptor antibody test directly measures antibodies against the acetylcholine receptor, which are characteristic of myasthenia gravis. A positive result supports the diagnosis, especially in generalized myasthenia gravis where it’s most likely to be detected. The other options assess unrelated conditions: ACTH stimulation tests adrenal function, lead levels screen for lead exposure, and a thyroid profile checks thyroid status. None of these detect acetylcholine receptor antibodies.

This question focuses on diagnosing an autoimmune weakness by looking for the specific antibody that targets the neuromuscular junction. The acetylcholine receptor antibody test directly measures antibodies against the acetylcholine receptor, which are characteristic of myasthenia gravis. A positive result supports the diagnosis, especially in generalized myasthenia gravis where it’s most likely to be detected. The other options assess unrelated conditions: ACTH stimulation tests adrenal function, lead levels screen for lead exposure, and a thyroid profile checks thyroid status. None of these detect acetylcholine receptor antibodies.