by Srvd
(Hyderabad )
Hello,
My fasting blood sugar is 130 mg/dL, and my post-lunch blood sugar is 160 mg/dL. I take diabetes medicine twice daily. Is my blood sugar normal now?
Answer by Dr. Albana Greca, MD, MMedSc
Hello,
Your readings are close to commonly used treatment targets for many adults with diabetes, but I would describe them as within or near target, not necessarily “normal.” Blood sugar targets for someone already living with diabetes are different from the diagnostic ranges used for someone without diabetes.
For many nonpregnant adults with diabetes, a common fasting or before-meal target is 80–130 mg/dL. Your fasting result of 130 mg/dL is therefore right at the upper limit of that general target.
One reading at 130 is not alarming, but if fasting glucose is repeatedly above your personal goal, your doctor may review evening food, sleep, illness, stress, the dawn phenomenon and medication timing. These possibilities are explained naturally in our guide to fasting blood sugar and morning glucose patterns.
For many adults with diabetes, a common peak after-meal target is below 180 mg/dL when checked one to two hours after the beginning of the meal. If your result of 160 mg/dL was taken in that time window, it is generally within the common treatment target.
The timing is important. A result taken immediately after eating, two hours after starting lunch, or four hours later does not have the same meaning. Our after-meal blood sugar guide explains how testing time changes interpretation.
Glucose changes throughout the day with meals, medicines, activity, stress, sleep and illness. A fasting result and one post-lunch result may look satisfactory while glucose is higher after dinner, overnight or on other days.
HbA1c helps show average glucose over approximately two to three months. For many nonpregnant adults, a common HbA1c goal is below 7%, but a safer target may be higher or lower depending on age, diabetes duration, heart or kidney disease and the risk of low blood sugar. You can understand this longer-term measurement in our article on HbA1c and average blood glucose.
Do not reduce or stop either medicine because of these two results. A treatment change should be based on repeated readings, HbA1c, side effects, kidney function, episodes of low glucose and the exact medicines and doses.
Some diabetes medicines have little risk of hypoglycemia when used alone, while insulin, sulfonylureas and meglitinides can cause low blood sugar. This is why your doctor needs the names, strengths and timing of both medicines. Our overview of diabetes medicines, benefits and side effects explains why treatment must be individualized.
Bring this information to your next diabetes review. A pattern is more useful than an isolated reading.
Arrange a treatment review if fasting readings are repeatedly above your personal target, after-meal readings are often 180 mg/dL or higher, HbA1c remains above goal, or you experience frequent low glucose.
Your fasting glucose of 130 mg/dL is at the upper limit of a common treatment target, and post-lunch glucose of 160 mg/dL is generally acceptable if measured one to two hours after lunch began. This suggests reasonable control at those two moments, but it does not prove that your overall diabetes control is ideal.
Continue your medicines as prescribed, keep a glucose record and review your HbA1c and personal targets with your doctor before making any treatment change.
Hope this helps.
Dr. Albana Greca
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