Where Should Your Sugar Levels Be

Random Blood Sugar Test

This measures your blood sugar at the time youre tested. You can take this test at any time and dont need to fast first. A blood sugar level of 200 mg/dL or higher indicates you have diabetes.

*Results for gestational diabetes can differ. Ask your health care provider what your results mean if youre being tested for gestational diabetes.Source: American Diabetes Association

If your doctor thinks you have type 1 diabetes, your blood may also tested for autoantibodies that are often present in type 1 diabetes but not in type 2 diabetes. You may have your urine tested for ketones , which also indicate type 1 diabetes instead of type 2 diabetes.

Normal Blood Sugar Ranges In Healthy Non

For a person without any type of diabetes, blood sugar levels are generally between 70 to 130 mg/dL depending on the time of day and the last time they ate a meal.

Newer theories about non-diabetic blood sugar levels have included post-meal blood sugar levels as high as 140 mg/dL.

Here are the normal blood sugar ranges for a person without diabetes according to the American Diabetes Association:

• Fasting blood sugar : Less than 100 mg/dL
• 1-2 hours after a meal: Less than 140 mg/dL
• 2-3 hours after eating: Less than 100 mg/dL

What Is Continuous Glucose Monitoring

Continuous glucose monitoring is another way to check your glucose levels. Most CGM systems use a tiny sensor that you insert under your skin. The sensor measures glucose levels in the fluids between your bodys cells every few minutes and can show changes in your glucose level throughout the day and night. If the CGM system shows that your glucose is too high or too low, you should check your glucose with a blood glucose meter before making any changes to your eating plan, physical activity, or medicines. A CGM system is especially useful for people who use insulin and have problems with low blood glucose.

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Whats Considered A Normal Glucose Level

Your doctor will likely test your blood glucose levels as a screening test for diabetes during a standard yearly check-up. Additionally, many people track their glucose at home with an over-the-counter finger-prick test. When you check blood glucose , either at a doctors office or with a home finger stick glucose monitor, the results are in milligrams of glucose per deciliter of blood.

One of the most common glucose measurements is fasting plasma glucose or fasting blood glucose , and its found by checking blood glucose levels after not having any calories at least eight hours before the test. According to the American Diabetes Association , people can be classified into three categories depending on their fasting plasma glucose levels: normal, prediabetes, and diabetes. To be considered normal, fasting glucose must be under 100 mg/dl.

Of note, CGM devices measure interstitial glucose levels compared to blood/plasma glucose levels measured in the FPG tests. While interstitial glucose and blood/plasma glucose levels correlate highly, they are not precisely the same, and diagnoses are not made from interstitial measurements.

Below is a summary overview of data about 24-hour glucose trends in nondiabetic individuals wearing CGM to gain a better understanding of whats normal.

High Blood Sugar Levels Symptoms

High blood sugar levels or also known as hyperglycemia can occur if you don’t take enough insulin, you miss a meal, or you exercise too little. High blood sugar levels can also be caused by stress, illness, or some medications.

Signs and symptoms that your blood sugar might be on the high side include:

• Increased urination

It’s important to treat high blood sugar levels quickly to avoid more serious problems. You can treat high blood sugar levels by drinking water and taking your diabetes medication or insulin.

It’s important to check your blood sugar levels right away and keep doing that every hour until your sugar levels are back in the normal blood sugar range.

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What Are Abnormal Glucose Levels And Why Do They Matter

Why is it unhealthy for glucose levels to be too high or too low ?

Hyperglycemia refers to elevated blood glucose levels. This usually occurs because the body does not appropriately remove glucose from the blood this can happen due to many complex reasons. Elevated glucose levels can damage blood vessels and nerves over time this can then lead to problems in the eyes, kidneys, and heart, as well as numbness in the hands and feet. Very high levels can lead to coma and even death in some cases. People with fasting glucose levels higher than 100 mg/dl have impaired glucose tolerance and should speak with their healthcare provider.

Some people may think that to avoid all these issues, they should just keep their blood glucose levels as low as possible. If too high is bad, then low must be good, right? Not exactly. When glucose gets too low, its called hypoglycemia. The threshold for hypoglycemia is typically thought to be when glucose falls below 70 mg/dl. When this happens, the body may release epinephrine , the fight or flight hormone, which can lead to a fast heart rate, sweating, anxiety, blurry vision, and confusion, but also helps the body mobilize glucose into the blood. If blood glucose levels stay too low for too long, it can cause seizures, coma, and in very rare instances, death.

Symptoms Of High Sugar Level

When blood sugar levels are high above the normal > 180mg/dL, it can be again dangerous and requires medical attention. This condition, also known as hyperglycemia, occurs when the body has insulin deficiency or cannot use it properly.

Some of the common symptoms of high blood sugar levels are:

If left untreated, hyperglycemia can lead to diabetic ketoacidosis, which is a life-threatening disease. Moreover, it can also cause heart complications, kidney-related problems, and liver disorders.

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What Is Blood Glucose Anyway

Blood glucose, or sugar, is sugar that is in your blood . It comes from the food that you eat foods that contain carbohydrate, such as bread, pasta, and fruit are the main contributors to blood glucose. The cells in our bodies need glucose for energy and we all need energy to move, think, learn, and breathe. The brain, which is the command center, uses about half of all the energy from glucose in the body.

Fasting Blood Glucose Level Test Preparation

What should you do if your doctor orders a fasting blood sugar test? The preparation is the same as when you take a fasting test for cholesterol. First, be sure to find out if you need to schedule an appointment for your test . Ask your doctor what time is best to take it.

Then:

• Schedule your test if necessary
• Ask your doctor if you need to change any of the medications you take on the morning of the test
• If you normally drink coffee or have caffeine, ask your doctor if that is okay. It may not be, since it affects blood sugar levels
• Fast for at least 8 hours before your test. Usually, an overnight fast is most convenient
• You can drink water

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How Should Blood Sugar Levels Be Before And After Eating

Ideally, before eating , your blood sugars should be between 80-130 mg/dL. One to two hours after eating , your blood sugars should be below 180 mg/dL.

Blood glucose levels can be affected by the type of food consumed, how much, and when but also many other different factors like physical activity, taking other medications, having other medical conditions, stress, age, an illness, and even menstrual periods.

How Do I Prepare For The Plasma Glucose Level Test And How Are The Results Interpreted

To get an accurate plasma glucose level, you must have fasted for at least 8 hours prior to the test. When you report to the clinic or laboratory, a small sample of blood will be taken from a vein in your arm. According to the practice recommendations of the American Diabetes Association, the results of the blood test are interpreted as follows:

Fasting blood glucose level

• If your blood glucose level is 70 to 99* mg/dL . . .
• What it means: Your glucose level is within the normal range.

*Values between 50 and 70 are often seen in healthy people.

**The condition of “prediabetes” puts you at risk for developing Type 2 diabetes, high blood pressure, and blood lipid disorders.

Last reviewed by a Cleveland Clinic medical professional on 02/21/2018.

References

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Treatment For High Blood Sugar Levels

For those with high blood sugar levels, it is vital to keep track of your blood sugars at home on a daily basis. This can be done with a glucose meter. These test monitors are often provided to diabetic patients so that they can manage their blood sugar levels at home everyday. They are available to purchase online if you are non-diabetic but wish to check on your levels regularly for safety.

Diabetic patients can be prescribed medications to help with insulin levels when their blood sugar is high. Those with type 1 diabetes will be prescribed medication which needs to be taken several times daily. This type of diabetes has no cure but can be managed with the right medication.

Those with type 2 diabetes or gestational diabetes can treat their high blood sugar with a change in diet or exercise. A healthier balanced diet is usually advised and sometimes, insulin medication is also prescribed if the blood sugar level becomes abnormally higher than the high reading for diabetic patients.

How Can I Treat Low Blood Sugar

If youve had low blood sugar without feeling or noticing symptoms , you may need to check your blood sugar more often to see if its low and treat it. Driving with low blood sugar can be dangerous, so be sure to check your blood sugar before you get behind the wheel.

Carry supplies for treating low blood sugar with you. If you feel shaky, sweaty, or very hungry or have other symptoms, check your blood sugar. Even if you dont have symptoms but think you may have low blood sugar, check it. If your blood sugar is lower than 70 mg/dL, do one of the following immediately:

• Take four glucose tablets.
• Drink four ounces of fruit juice.
• Drink four ounces of regular soda, not diet soda.
• Eat four pieces of hard candy.

Wait for 15 minutes and then check your blood sugar again. Do one of the above treatments again until your blood sugar is 70 mg/dL or above and eat a snack if your next meal is an hour or more away. If you have problems with low blood sugar, ask your doctor if your treatment plan needs to be changed.

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How Does Blood Sugar Level Work

With a lack of nutrients and food that contain glucose, the blood sugar level will begin to decline. This is known as hypoglycemia.

After blood sugar becomes low, the pancreas releases a peptide hormone called glucagon. When this happens, the glucose that is stored in the body for energy is instructed to release due to the liver. This causes the glucose to turn into glycogen, known as the glycogenesis process. This is what can help a body to regain energy as the readily stored glycogen, in the liver and muscles, will release into the body.

On the other hand, the blood sugar can also rise and become too high which is known as hyperglycemia.

When the body does not produce enough of the insulin hormone, blood sugar levels begin to increase. This is because glucose relies on the insulin hormone to help it absorb into the bloodstream. Usually, this occurs when the body cannot produce enough insulin, known as type 1 diabetes, or does not respond to insulin correctly, known as type 2 diabetes.

Eating too many processed foods can also cause your blood sugar level to rise. If there is not enough insulin present in the body, too much bad food can cause your blood sugar level to build up.

For those with a normal blood sugar level, this will be due to eating the right foods and your body being able to produce and respond to insulin.

You may be wondering what exactly causes an imbalance in blood sugar levels, so here is a roundup:

Blood Sugar Level Chart By Age

Blood sugar levels tend to rise with age due to an increase in insulin resistance and decrease in insulin sensitivity. In one study by the National Health Institute , each extra decade of age was linked to a 2.7 mg/dl increase in fasting glucose, and a 4.5 mg/dl increase in 2-hour post-prandial glucose levels.

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What Blood Sugar Goals Should I Be Aiming For

The American Diabetes Association recommends that most people with diabetes aim for the following blood sugar goals:

• Preprandial : 80-130 mg/dL
• Postprandial : Less than 180 mg/dL

Your doctor will likely set different goals for you based on many factors including your age, how long you’ve had diabetes, other health problems you have.

How To Do A Finger

Your healthcare team will show you how to do it the first time, but these are the key steps:

• Wash your hands with soap and warm water. Dont use wet wipes as the glycerine in them can affect the test result. Make sure your hands are warm so its easier to get blood and wont hurt as much.
• Take a test strip and slot it into the meter to turn it on. Some meters will have tests strips built in.
• Remove the cap from your finger prick device and put in a new lancet. Then put the cap back on and set the device by pulling or clicking the plunger.
• Choose which finger to prick but avoid your thumb or index finger . And dont prick the middle, or too close to a nail. Place the device against the side of your finger and press the plunger. Use a different finger each time and a different area.
• Take your meter with the test strip and hold it against the drop of blood. Itll tell you if the test strip is filled, usually by beeping.
• Before you look at your reading, check your finger. Use a tissue to stop bleeding, then use it to take out the lancet and throw it away in your sharps bin.
• You can use the same tissue to take out the test strip and throw that away too. Taking out the strip will usually turn the meter off.

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How Can I Pay For Tests And Diabetes Supplies

Medicareexternal icon, Medicaid, and most private insurance plans pay for the A1C test and fasting blood sugar test as well as some diabetes supplies. Check your plan or ask your health care team for help finding low-cost or free supplies, and see How to Save Money on Diabetes Care for more resources.

Why Your Blood Sugar Level May Be Low

If blood sugar drops below 70 mg/dL, it is below normal levels. This can be caused by a variety of factors, such as:

• Not eating enough or missing a meal or snack
• Reducing the amount of carbohydrates you normally eat
• Alcohol consumption especially if youre drinking on an empty stomach
• Taking too much insulin or oral diabetes medication based on carbohydrates or activity levels
• Increased physical activity
• Side effects from medications

If you have diabetes, keep your blood glucose meter and sources of fast-acting glucose close by in case your blood sugar drops. This is especially important for people with hypoglycemia unawareness, which is a condition that causes symptoms of low blood sugar to go unnoticed.

Eating balanced meals and snacks at regular times throughout the day is a big part of maintaining normal blood glucose levels. Check out our article on meal planning for diabetes to better understand the three macronutrients where calories come from and which have the biggest effect on blood sugar.

Meal Planning for Diabetes: How to Optimize Your Diet >

Everyone will respond differently to certain factors, which is why its important to have individualized target glucose levels. To help you reach your target blood glucose goals, work with your healthcare provider to discuss modifications to your diet, physical activity, or medications, and alert them of other factors like a recent illness or stressful event.

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Follow Your Diabetes Meal Plan

Make a diabetes meal plan with help from your health care team. Following a meal plan will help you manage your blood glucose, blood pressure, and cholesterol.

Choose fruits and vegetables, beans, whole grains, chicken or turkey without the skin, fish, lean meats, and nonfat or low-fat milk and cheese. Drink water instead of sugar-sweetened beverages. Choose foods that are lower in calories, saturated fat, trans fat, sugar, and salt. Learn more about eating, diet, and nutrition with diabetes.

Check Your Blood Glucose Levels

For many people with diabetes, checking their blood glucose level each day is an important way to manage their diabetes. Monitoring your blood glucose level is most important if you take insulin. The results of blood glucose monitoring can help you make decisions about food, physical activity, and medicines.

The most common way to check your blood glucose level at home is with a blood glucose meter. You get a drop of blood by pricking the side of your fingertip with a lancet. Then you apply the blood to a test strip. The meter will show you how much glucose is in your blood at the moment.

Ask your health care team how often you should check your blood glucose levels. Make sure to keep a record of your blood glucose self-checks. You can print copies of this glucose self-check chart. Take these records with you when you visit your health care team.

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