Thanks for the update on your son.
I do not know about a test for Lyme Disease that is being researched, but I do know that the Washington Post had an article last summer,
Amy Tan, Ticked Off About Lyme; The Novelist Under Treatment for Late-Stage Lyme Disease, Could Never Have Conceived How Hard It Would Be to Get a Diagnosis--or How Surreal the Symptoms Could Be
dateline August 5, 2003. I thought I'd saved a copy but apparently not.
My recollection (always questionable
) is that it detailed different tests with a focus on whatever was not typically done.
Hopefully you can find it if you go to www.washingtonpost.com
and search the Archives for Lyme Disease. I remember it caught my eye when I was in the diagnostic "rule out" stage and Lyme Disease was under consideration. It might be worth the $2.95 to purchase a copy.