Yeast did not show up for me in any other test other than what was called an OAT test from Great Plains labatory. The test is a urine test. If it didn't show up in your blood it might just mean it hasn't become systemic and stool tests only test for the large intestines. The OAT urine test allows a Dr to see if they yeast is hiding out in your small intestines which was the case for me. It also detected another anerobic bacteria that was hiding out in my small intestines that had been missed by other tests. Hope that helps.