The blood tests are looking for antibodies, parts of your immune system, they wouldn't show in regular blood counts. Brain fog and bone pain/arthritic changes are common symptoms. Some other common symptoms are fatigue, an itchy skin rash, tingling/numbness, mouth sores, infertility, migraine, seizures, depression, irritability and thinning tooth enamel.
There are a few people who have alot of symptoms but most Celiacs only have a few symptoms. "Silent Celiac" is when there are NO symptoms until something catastrophic happens, like intestinal cancer. That happened to my grandfather.
If you have active Celiac Disease you may be at greater risk for several disorders; type 1 diabetes, thyroid disease, certain types of cancer and liver disease, among others.
Alan - I don't think six days will hurt the panel. Mention it to your doctor though, he might want to retest.
The only proof positive diagnosis for Celiac Disease is a small bowel biopsy taken with an endoscope. It's not as bad as it sounds!
Have'em check for H.Pylori while they're in there. And make sure they take more than 6 individual biopsies. Celiac is hard to detect, the damage is patchy and cannot be seen with the naked eye. They need to take a bunch of samples from different areas in the small intestine to catch it.