Glucose (Blood Sugar) Monitoring

A1c
Information Guide

The hemoglobin A1c test measures the average blood glucose level over the past three months (24 hours a day, 7 days a week) and differs from blood glucose checks performed daily with a meter.

At least two A1c tests are recommended every year (at a minimum) in addition to daily blood glucose monitoring.

• Checking blood glucose using a meter shows your blood sugar level at any given time

• Discuss with your care team how often you should be testing your blood glucose

Checking blood sugar throughout the day 

Testing glucose levels at the same time each day allows you to track patterns. For people who receive multiple daily insulin injections or use an insulin pump, it's generally recommended to test before meals and snacks, occasionally two hours after the first bite of a meal, at bedtime, before exercising, when low glucose is suspected, after treating a low, and before critical tasks such as driving.

Hypoglycemia
(Low Blood Glucose)

Hypoglycemia is defined as blood glucose levels below normal (usually below 70 milligrams per deciliter). Symptoms include excessive hunger, shakiness, sweating, dizziness, lightheadedness, pale skin, and/or confusion. Left untreated, hypoglycemia may lead to unconsciousness. 

Hyperglycemia
(High Blood Glucose)

Hyperglycemia is defined as blood glucose levels above the target range set by your care team. In general, it’s when glucose is consistently above 180 mg/dL. Symptoms include excessive thirst and/or urination.