A patient presents with a CD4 count of 400 cells/μL, HbA1c of 10%, and platelet count of 150,000/μL. Which finding represents the greatest concern for dental treatment planning?

An HbA1c of 10% indicates severely poorly controlled diabetes, reflecting average blood glucose levels well above the target range. This has the greatest immediate clinical significance for dental treatment: it markedly impairs wound healing, increases infection risk post-extraction, accelerates periodontal disease progression, and may indicate an underlying medical crisis (diabetic ketoacidosis risk). A CD4 count of 400 cells/μL is below normal (500–1,500) but represents HIV disease rather than AIDS (CD4 < 200 = AIDS); dental treatment can proceed with standard precautions at this CD4 level. A platelet count of 150,000/μL is at the lower limit of normal (150,000–400,000) and does not represent significant bleeding risk for routine dental procedures.