How to Properly Store Test Strips (And Why It Matters)

If you've ever gotten a blood sugar reading that seemed completely off, your test strips might be the culprit. How you store your diabetes test strips can directly affect their accuracy — and that means it can affect your health decisions every single day. The good news is that storing them properly is simple once you know what to watch out for.

Why Proper Storage Matters for Accurate Readings

Test strips are sensitive little tools that react to moisture, heat, and light — and any of those factors can throw off your results. An inaccurate reading could lead you to take too much or too little insulin, which is why this matters so much.

• Damaged strips can give falsely high or low blood sugar readings

• Inaccurate results can lead to incorrect medication decisions

• Expired or compromised strips may not react properly with your blood sample

• Poor storage shortens the usable life of your strips, costing you money

The Golden Rules for Storing Test Strips Properly

Following a few simple guidelines will help keep your strips in top condition from the moment you open the container. These habits are easy to build into your daily routine.

• Always store strips at room temperature, ideally between 59°F and 86°F

• Keep strips in their original container with the lid tightly closed

• Never store strips in the bathroom or kitchen where humidity is high

• Avoid leaving strips in a hot car or near a sunny window

• Keep strips away from direct sunlight and fluorescent light exposure

The Bathroom Cabinet Is Not Your Friend

It might seem convenient to keep your diabetes supplies in the bathroom, but the steam from showers and sinks creates humidity that can degrade your test strips quickly. A bedroom dresser drawer or a dedicated spot in your living area is a much better choice.

What Happens When Strips Are Exposed to Extreme Temperatures

Heat and cold are both enemies of test strip accuracy. Strips exposed to temperatures outside the recommended range may give you readings that are dangerously misleading.

• High heat can break down the chemical enzymes in the strips

• Freezing temperatures can cause condensation when strips warm back up

• Strips left in a hot car can be ruined within hours

• Always let refrigerated strips come to room temperature before using them

Don't Forget About the Expiration Date

Every vial of test strips has an expiration date printed on it, and that date matters more than most people realize. Using expired strips is one of the most common causes of inaccurate blood sugar readings.

• Check the expiration date before opening a new vial

• Discard any strips that are past their expiration date

• Once opened, most strips should be used within 3 to 6 months — check your brand's guidelines

• Write the date you opened the vial on the container as a helpful reminder

Travel Tips for Keeping Your Strips Safe on the Go

Traveling with diabetes supplies takes a little extra planning, especially when temperatures and environments change. A few simple steps can keep your strips accurate no matter where life takes you.

• Use an insulated diabetes supply case to protect strips from heat and cold

• Never pack test strips in checked luggage where temperatures can fluctuate wildly

• Keep strips in your carry-on bag when flying

• In hot climates, store your kit in a shaded, cool spot whenever possible

Shop Diabetes Supplies at MDS Diabetes

At MDS Diabetes, we make it easy to stock up on the test strips, meters, and storage supplies you need to manage your diabetes with confidence. Visit us at mdsdiabetes.com or give us a call at (877) 861-3571 — our friendly team is ready to help you find exactly what you need at prices that work for you.