An estimated 23.6 million people in the United States have diabetes, a condition characterized by high blood sugar levels, according to 2007 statistics, the most recent published by the American Diabetes Association. If you have a family history of this disease or exhibit symptoms of diabetes, such as increased thirst and urination or unusual weight loss, your doctor may want to perform a glucose test. During a glucose test, your doctor will draw a small amount of blood from your vein and will then evaluate the levels of glucose, or sugar, in your blood sample. Talk with your doctor about any concerns you may have regarding the side effects of a glucose test for diabetes.
Pain or Stinging
A medical professional will withdraw a blood sample by inserting a small needle into a vein in your hand or along the inside of your elbow. When the needle is inserted into your vein, you may feel a mildly painful or stinging sensation. Such side effects of a glucose test are temporary and typically subside within a few seconds or minutes after the test is complete. If you experience significant discomfort during a glucose test, notify your medical care provider immediately.
Dizziness or Fainting
When blood is withdrawn from your body, your blood pressure may decrease slightly. Consequently, you may experience a sensation of dizziness or lightheadedness. Severe dizziness may result in fainting, MedlinePlus warns. Tell your doctor if you become lightheaded during a glucose test. Your doctor may recommend that you remain seated or lie down for several minutes after the test is completed in order to limit your risk of passing out.
Bleeding or Bruising
The needle used to withdraw your blood sample may damage your vein or the skin surrounding the site of needle insertion. If this occurs, a small amount of blood may accumulate beneath the surface of your skin resulting in the appearance of a bruise. The bruise may appear pink or red in color and should progressively fade over the course of several days. Contact your physician as soon as possible if your skin begins to bleed profusely or if it continues to bleed for more than a few hours after your glucose test is completed.
Infection
Any time your skin is damaged, infectious pathogens have an opportunity to invade your body. Thus, you may be at risk of developing an infection after receiving a glucose test, Drugs.com reports. Seek care from your doctor immediately if you develop any signs of infection, including fever, sweating or chills, after undergoing this type of diabetes test.
