This can mean blood tests to check hormone levels, low allergy food trials to see if a food allergy is involved, and in extreme cases, a skin biopsy. (happytailsspa-blog.com)
But at the same time, researchers have been testing the science behind these supposedly low allergy dogs. (thehappypuppysite.com)
Special low allergy infant formulas can be given for cow's milk protein intolerance. (cyh.com)