system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
A previously healthy 30-year-old woman comes to the physician because of a 3-month history of progressive shortness of breath and nonproductive cough. She also complains of constipation and fatigue during the same time period. She has not traveled recently or been exposed to any sick contacts. Physical examination shows injected conjunctivae and tender, erythematous nodules on both shins. The lungs are clear to auscultation. An x-ray of the chest is shown. Which of the following additional findings is most likely in this patient?
assistant
Low serum CD4+ T-cell count