The Candida spit test involves filling a clear glass with water, spitting into it, and observing how the saliva interacts with the water, according to Columbia Health. Saliva that develops a wispy, stringy appearance and descends deeper into the glass after several minutes indicates the presence of yeast.
Individuals should perform the Candida spit test immediately after waking up in the morning, before they rinse their mouths or consume anything, advises Columbia Health. While this simple at-home test may provide some clues about an individual's yeast levels, it is not a precise method for diagnosing candidiasis. A health care provider can collect samples and send them to the laboratory for an accurate diagnosis.