Candida Quiz: Ace Your Exams

A 35-year-old woman comes to an outpatient clinic to evaluate substernal chest pain and pain with swallowing. She immigrated from India six months ago, and this is her first time visiting a physician in the United States. She is sexually active with male and female partners, and she uses condoms inconsistently.Vaccinations are up to date. Temperature is 38.11°C (100.6°F), pulse is 99/min, respirations are 20/min, and blood pressure is 120/75 mmHg. Physical examination reveals a frail and cachectic woman. Oral examination reveals white plaques on the buccal mucosa that can easily be scraped away, revealing erythematous mucosa. Microscopic examination of the oral lesions is shown below. Which of the following laboratory findings is most suggestive of this patient's underlying disease process?
 
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