The evaluation of thrush begins with a history and physical exam.

Physical findings in someone with thrush may include:

• Throat redness
• White coating on the surface the mouth and throat:
• On the tongue
• On the back of the throat
• Coating does not come off with application of a swab

Usually, tests are not necessary to make the diagnosis of thrush.

Tests that may be used to evaluate thrush include:

• Culture of the throat
• Strep screen of the throat
• Examination of the white coating under a microscope
• Monospot