Thank you,

I forgot to mention that B12 is normal (550) and D has recently been normal and I supplement daily.

I am not on a statin and don't have high cholesterol. I am in very good shape normally, running, hiking, and some weight lifting.

Given the acute onset my thoughts are also toward an immune-mediated response, whether a gammaglobinopathy, GBS variant, etc., but my neurology knowledge base is pretty well exhausted beyond those thoughts.

And thank you for the Quest link, I am studying it.