Consumer Reports tested 13 blood-glucose monitors to find the best for your dollar.
Consumer Reports gathered panelists to test the devices once in the morning and once at night.
Dr. Orly Avitzur is a medical adviser to Consumer Reports.
He says, "The problem if someone gets inaccurate or inconsistent test results is that the medication that they administer would be the wrong dose and that could lead to either too serious a drop in blood sugar or a blood sugar that's too high."
The tests found some of the home glucose monitors performed better than others.
Top ratings went to the One-Touch-Ultra-Mini. It delivered consistent, accurate readings in about five seconds and it's easy to use.
It costs $20, plus $1.14 for each strip.
Consumer Reports named the ReliOn Ultima sold at WalMart a best buy. It earned very good scores for consistency and accuracy and its strips cost just $0.44 each.
Insurance may cover the cost of a blood-glucose monitor, as well as testing supplies, so it's worth checking with your insurer to see if you've got coverage.
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