Blood Sugar Level Chart

Charting your blood sugar is a simple way to maintain a healthy blood sugar level.  It allows you to determine what foods and lifestyle choices negatively impact blood glucose levels.  Charting can even aid physicians in diagnosing a blood sugar disorder.

The American Diabetes Association suggests that someone who is taking insulin or diabetes pills, is pregnant, has severe low blood sugar or ketones, or has low blood sugar without symptoms should regularly test blood sugar levels.  Using an electronic blood sugar monitor can help track blood sugar levels throughout the day.

Target blood glucose levels will be different for each individual based on the presence of a blood sugar disorder such as diabetes, basic physical conditions, age and other health and lifestyle factors.  Target levels can be worked out with a physician.  Generally, however, a healthy blood glucose level will fall between 70 mg and 100 mg upon waking or after a four or more hour period of not consuming any food or glucose.  Taken two hours after a meal or after eating glucose, sugar levels should fall below 140.  For someone with pre-diabetes, glucose levels may rise between 101 and 126 when fasting and 140 to 200 two hours after eating.  And for those with diabetes, blood sugars are higher than 126 when fasting and will register greater than 200 two hours after eating.  Here is a handy blood sugar level chart for you.  For easy access, you could print it out and hang it up.


State of Health

Fasting Value

After Eating



2 hours after eating




Less than 140




140 to 200


More than 126


More than 200








To keep track of blood sugar levels throughout the day, the key is to take blood sugar readings with an electronic blood sugar monitor and keep track of the results in a notebook or pad of paper, along with information related to when meals were eaten.  With a notebook full of blood sugar readouts, physicians have an easier time diagnosing and treating blood sugar problems.

Most people find that the easiest and most telling times to track blood sugar are upon waking up and before breakfast, before any other meals during the day, two hours after each meal, and before bed.  This is the standard, though depending on the symptoms and/or the diagnosis, the physician may encourage his patient to take readings more frequently.

If you are unsure whether you should be tested for diabetes, some guidelines may help you decide whether or not you need to speak with your doctor about the possibility of diabetes testing.  The American Diabetes Association suggests that all people who are 45 and older should be tested as well as those under 45 who are overweight or obese and have one or more of these risk factors: sedentary lifestyle, immediate family member with diabetes, gestational diabetes or delivering a large baby over nine pounds, high blood pressure, polycystic ovarian syndrome, acanthosis nigricans, or cardiovascular disease.  Low blood sugar or insulin resistance can be diagnosed with close charting.  If you are having symptoms of low blood sugar, talk to your doctor.