If your doctor diagnoses you with high blood pressure, you may need additional tests. This may include lab tests and monitoring of your heart. During the initial evaluation, recommended tests can include a complete blood count, an assessment of kidney function by examining your serum creatinine, and a urinalysis. Your heart is a major factor in confirming your diagnosis and can include an electrocardiogram and echocardiogram which can be used to examine any signs of heart damage, such as an enlarged heart or previous heart attack. You may also have your blood sugar checked through a random blood glucose or hemoglobin A1C. If you are taking additional medications or have other conditions, you may have other tests checked as well.