For cats, there is no single reliable diagnostic blood test for this type of worm. (cat-lovers-only.com)
There is not a useful diagnostic blood test or stool test for yeast overgrowth. (treatlyme.net)
Our diagnostic capabilities include the use of a commercial laboratory for routine testing and complicated specialized tests and our in house laboratory is equipped to run diagnostic blood tests in the case of acute illness. (cosmicvetclinic.com)