I can not remember where i read to do this, it may have been Dr. Clarks website or through nature sunshine products. But when I thought I was infected with candida there as a simple at home test you can do. Get yourself a clear class of water about 8 oz. fill it about 3/4. Luke warm water is fine. Get some good spit going and spint in the cup. I know it sounds gross but I did it. Let it sit for a while maybe 3 minutes or so. Check to see where your spit is floating. If it went to the bottom or dissolved in the cup you should be fine. If it stayed on the top, with some visible white bubbles, and (most importantly) look for string like legs or tentacles (sp) dangling from the spit at the top of the cup. I couldn't believe my eyes when I saw it. I went on and did a yeast cleanse from Nature sunshine.