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7 things to consider when buying a glucometer for blood sugar monitoring

A glucometer is a vital tool for monitoring blood glucose levels. We spoke to a nurse and diabetes educator on what to consider before choosing a blood glucose meter
(Image credit: Getty)

Testing your blood sugar at home is an important part of managing your diabetes, as self-testing blood glucose levels can indicate how you're affected by certain foods and drinks, by exercise and other factors. A glucometer makes testing easier. These small, handheld devices are designed to take a reading of your blood glucose, and there are several things to keep in mind when choosing the best glucose meter (opens in new tab) for you. We'll go into these shortly.

The vast majority of glucose meters are designed with small lancets to prick your finger to produce a drop of blood. You then add that blood to a glucose test strip to gain a blood sugar reading. A live reading will be displayed on the glucose meter. 

If the idea of pricking your finger is off-putting, there are a few non-invasive glucose meters that use a sensor patch instead. This patch sits on your arm to monitor blood sugar levels, but there are pros and cons to these types of devices (see below).

Feeling a little confused as to which type of glucometer best suits your needs? Don't worry, as we've spoken to diabetes educator and nurse clinician Susan Stauffer (BSN, RN, CDE), of Poudre Valley Health System, to gain her insight into blood sugar monitors and what you need to factor in before choosing one. Here's what she had to say...

1. Get clear on the different types of glucometers

There are several types of glucose monitor to choose from, starting with self-monitoring meters. These are the most common glucose monitors and are used to test glucose levels in blood samples absorbed on a test strip after pricking your finger. 

In comparison to other glucometers, noninvasive glucose meters are fairly new and aim to monitor blood glucose levels without implants or skin pricking. For instance, the Abbott FreeStyle Libre uses a sensor patch placed on your arm. 

Continuous glucose monitors (CGMs) use a monitoring sensor implanted under your skin to take readings throughout the day and night. These devices provide constant data and don’t require test strips. However, they require implanting and some still need finger-pricking for calibration.

Buy the FreeStyle Libre direct from Abbott Diabetes Care (opens in new tab)

2. Determine if you need one that tests ketones

Some people need to measure blood glucose levels and diabetic ketoacidosis, and there are all-in-one-testers, such as the Fora 6 Connect, that check for both. When asked whether these are preferable over separate, specialized equipment for each type of test, Stauffer said: While people with type 1 diabetes need to check for ketones, you can buy a bottle of urine ketone strips for about $10 and blood ketone strips may cost $20 for 10 strips with insurance. It’s often easier and cheaper just to check urine ketones.”

Buy the Fora 6 Connect at Amazon (opens in new tab)

3. Check the glucose meter’s accuracy rating

Current FDA standards require 95% of all glucometer results to be within +/- 15% of ‘comparator’ (lab tested) results, and 99% of results to fall within +/- 20% of lab results. However, just because a meter is FDA approved doesn’t mean it’s always going to be accurate, so check if the meter can self-calibrate. In our round-up of glucometers, the Accu-Chek Guide ranked top for accuracy.

Buy the Accu-Chek Guide at Rite Aid (opens in new tab)

7 things to consider when buying a glucometer for blood sugar monitoring: the Dario LC Blood Glucose Management System is used to take a blood sugar reading

(Image credit: Dario)

4. Pay attention to the meter's blood sample size

When checking the specifications of your new glucose meter, look for the size of the blood sample needed to perform a test. The size of samples needed range from 3.0 microliters down to 0.3 microliters. It’s a spec worth paying attention to, especially for parents of children with diabetes. In our guide to glucometers, the model with the smallest required sample size was the Dario LC Blood Glucose Management System at 0.3 microliters.

Buy the Dario LC Blood Glucose Management System at Best Buy (opens in new tab)

5. Factor in how frequently you need to test

How often you need to test your glucose levels will give you a steer on which type of glucose meter to use. If you test your blood sugar throughout the day, look for a glucometer with a large memory, plus the ability to easily download results. If you test less frequently, a self-monitoring meter is suitable. Check the cost of the test strips if your insurance doesn’t cover them. On that note… 

6. Check your health insurance coverage

In Stauffer’s opinion, securing the best health insurance (opens in new tab) is the most important factor when choosing a glucometer. “I’ve always believed a crucial factor for people who routinely check their blood sugar is insurance coverage.” says Stauffer.

Stauffer advises you to check if your insurance covers both the cost of the glucose meter and the test strips. If you’re testing four times a day the price quickly adds up, and insurance companies often set a limit on how many strips they’ll pay for per month or year.

Buy the Contour Next One at Rite Aid (opens in new tab)

Contour Next one Glucose Meter

(Image credit: Contour)

7. Decide how you want to record your results

Keeping a track of your blood glucose numbers is vital, so check that your preferred glucometer has ample storage functions or offers the ability to create and download data logs. Some glucose meters link to popular monitoring apps (so that you can store and analyze readings), and we found the Contour Next One to be one of the most full-featured smart glucose meters available.

If you need help researching other insurance needs too, we have rounded up the best dental insurance and the best vision insurance companies, as well as the best Medicare Part D plans for any ongoing prescription drug costs.

Dave is an Editor at Future PLC, and currently runs the site PetsRadar. He is keen on pet and personal health, and has a long history working across a wide range of print magazines. Dave has covered a number of subject areas for Top Ten Reviews including sleep, mattresses, and other aspects of personal wellbeing.