The nurse is completing an assessment for a client with uncontrolled diabetes mellitus (DM) who came to the clinic reporting frequent, painful urination. Which screening test should the nurse perform first?

A. A urine dipstick test is a preliminary screening tool that can quickly provide information about the presence of glucose, protein, nitrites, and leukocytes in the urine. In the context of uncontrolled diabetes with symptoms of painful urination, this test is useful for identifying signs of a urinary tract infection (UTI), which is a common complication in diabetic patients. B. A rapid strep test is used to diagnose streptococcal infections, particularly strep throat. It is not relevant to the symptoms of frequent and painful urination and does not help in assessing diabetic complications or urinary issues. C. Nitrazine pH strips are primarily used to assess amniotic fluid in pregnant women to determine if labor has started. They are not used for diagnosing urinary tract infections or evaluating symptoms related to diabetes. D. A fingerstick glucose test measures blood glucose levels and is useful for assessing the client's current glycemic control. While monitoring blood glucose levels is important for managing diabetes, it does not directly address the issue of painful urination or the presence of a urinary tract infection.