I had a biopsy not long ago, one specimen in salt water, and one in formalin. They need to be put into the right fluids first.

(they were negative, but I was on too little gluten beforehand first I think)

The doctor must write the right order to the lab, of course, not just send a biopsy and let the lab decide....

Can you re-do it?

I would love a diagnosis because I think I should not be around wheat flour dust at work one day a week for an hour. A diagnosis might help me with arguments.