A 55-year-old female presents with excessive thirst, frequent urination, and blurred vision. Recent blood tests show normal fasting glucose levels but elevated triglycerides. What are the potential diagnoses and next steps?
This patient's symptoms are suggestive of diabetes mellitus, but her normal fasting glucose levels might suggest otherwise. However, she could still have type 2 diabetes mellitus, as it can sometimes present with normal fasting glucose but elevated postprandial glucose. Elevated triglycerides are also a common finding in type 2 diabetes. The next step would be a glucose tolerance test and measurement of HbA1c levels for a more definitive diagnosis.