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Blood Test

A MGteam Member asked a question 💭
Utah

Hi all! Thanks for sharing your thoughts and journey! As I may have mentioned, I’m still in the denial phase. Bc the dr’s disagreed originally and misinformation it has made it hard for me.

Can anyone give me info on the blood tests? I came back positive for blocking Antibiodies but negative for binding antibodies. Does that mean positive? I’ve read through the provided links here and they are no specifics for each antibody. So I’m unclear if you only have to test positive for one or if it can… read more

January 1
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A MGteam Member

Thanks for your response Ashley!

The neurologist wasn’t 100% that I have MG even though I tested positive for blocking antibodies. I took my patch off for him to look at my eye and at some point during that convo he said my eyelid went droopy and we should be proactive with seeing if steroids helped. He said if they helped I most likely have MG if they don’t then be still thinks it could be a cranial palsy.

Would an EMG test work if it’s only in my eyes? I guess I’m not sure what to do from here. It sounded like I would stay on prednisone for 2 weeks and then call him and let him know if things have changed.

Any suggestions let me know! I started getting eye pain in my good eye this past week, but it had subsided.

Thanks again!

January 2
A MGteam Member

Thank you for sharing so openly—it’s completely understandable to feel stuck in that space of uncertainty when doctors have differing opinions and the information feels unclear. 💜 The mixed results from antibody tests can definitely add to the confusion, as MG diagnosis can sometimes be tricky. While some people test positive for only one type of antibody, others don’t show antibodies at all but still have MG.

It’s great to hear that prednisone is helping with your double vision—that’s a positive step forward! Have your doctors mentioned any follow-up tests, like an EMG or another evaluation, to get more clarity? Sending you lots of strength and hoping you find some answers soon. 🌟💬

January 2
A MGteam Member

Testing positive for blocking antibodies can indicate myasthenia gravis (MG), even if binding antibodies are negative. Around 85% of MG patients have acetylcholine receptor (AChR) antibodies, which include binding, blocking, and modulating types. Testing positive for any of these supports an MG diagnosis. False positives Show Full Answer

Testing positive for blocking antibodies can indicate myasthenia gravis (MG), even if binding antibodies are negative. Around 85% of MG patients have acetylcholine receptor (AChR) antibodies, which include binding, blocking, and modulating types. Testing positive for any of these supports an MG diagnosis. False positives are rare, but additional tests like electromyography or MuSK antibody testing can confirm. Your symptom improvement with prednisone also aligns with MG. Always consult your doctor for clarity!

January 1

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