Normal fasting blood sugar level

Fasting blood sugar test is done to measure the glucose ( sugar) level after 8-12 hours of fasting. Fasting blood sugar level is found in a certain range in healthy people. This range is controlled by the insulin and the glucagon hormones which are produced by pancreas.

Fasting blood sugar is one the first-step blood tests that doctors request in the routine, because any changes in fasting blood sugar level may be a sign of a health problem. Fasting blood sugar test is used determine the blood glucose level and also to find if you have diabetes or hidden diabetes.

You should have fasting blood sugar test regularly;

1- If any of your family member has diabetes

2- If you are older than 50

3- If you have the symptoms of low blood glucose ( hypoglycemia) like;normal fasting blood sugar

  • Blurred Vision
  • Rapid Heartbeat
  • Unexplained Fatigue
  • Sweating
  • Dizziness
  • Headaches
  • Pale Skin
  • Anxiety
  • Weakness
  • Hunger
  • Confusion
  • Seziures

4-If you have the high blood glucose ( hyperglycemia) symptoms like;

  • Frequent Urination
  • Increased Thirst
  • Blurred Vision
  • Weight Loss
  • Fatigue
  • Slow Healing Sores
  • Infections

 

Preparation for fasting blood sugar test

As you can understand from the fasting blood sugar test name you should not eat anything for a certain time before the test. At least 8-12 hours of fasting is needed. Morning blood collection is preferred so you can stop eating after 8:00-10:00 pm and you can give blood at morning. You can drink only water during this period; other foods and drinks like soda, milk, alcohol etc may affect your fasting blood sugar test result.

Test sample for fasting blood sugar

Commonly a tube of blood which is collected from an arm vein will be suitable for fasting blood sugar test. Blood may be collected from a vein on of your arm inside of your elbow or on the back of your hand. Blood tube is centrifuged and plasma or serum is collected according to the tube type. Fasting blood sugar test can be done in both plasma or serum.

Also you can check your blood glucose level at home with simple blood sugar meter devices

  • Wash your hands and dry before starting your home blood glucose test
  • Insert a test strip into the blood glucose meter
  • You should prick your fingertip with a sterile sharp needle or a sterile lancet
  • Put one drop of blood on the test strip
  • Place the test strip into the blood glucose meter device.
  • You can have your blood sugar result within 15-20 seconds
  • You can record your blood glucose levels for future views

Fasting blood sugar test normal levels

Fasting blood sugar level should be betweeen 70-100 mg/dL in healthy people.  The results higher or lower from this range may be a sign of a problem and should be examined to find the cause.


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