How Is a Blood Sugar Level Monitored?

Diabetics must monitor blood sugar levels in order to keep them stable or to notify the doctor of highs and lows. Doctors also monitor blood sugar levels, as well. The results of individual monitoring and clinical monitoring help doctors adjust medication or avoid complications.

Meters

Diabetics monitor their blood sugar levels using a glucose meter or glucometer. It gives random blood sugar levels within 5 seconds of testing the blood.

Fasting

Doctors may prescribe 14 hours of fasting. The lab technician takes blood samples that show the doctor the percentage of sugar in the blood. Testing is done one to two times a year.

A1C

An A1C is a blood test that gives an average of blood sugar in blood cells over a 3-month period and is prescribed every 3 months.

Continous Monitoring

The CGMS or continuous glucose monitoring system is sometimes used when glucose levels are erratic or for severe Type 1 diabetics. The diabetic wears the monitor, which gives a reading every few minutes.

Ranges

Diabetics try to keep blood sugar ranges within 70 to 130 milligrams per deciliter or mg/dL.

Percentages

Doctors like to see fasting percentages under 7 percent. Average rates for people without diabetes are 4 to 6 percent.

Resources

• Mayo Clinic

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