There is no test for Morgellons. You need to look at your skin with a microscope. A doctor won't do it for you. They don't believe it's real. If you have the symptoms of crawling, itching, biting, stinging, coupled with fibers, you've got it.
Morgellons is the only disease producing fibers. The fibers can be microscopic, so a cheap hand-held microscope is necessary.