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

If you've ever gotten a blood sugar reading that seemed way off, your test strips might be to blame. How you store diabetes test strips properly can have a huge impact on their accuracy — and your health. The good news is that a few simple habits can protect your strips and give you readings you can trust.

Why Proper Storage Actually Matters

Test strips are sensitive little tools that react chemically with your blood to measure glucose levels. When they're exposed to the wrong conditions, that chemistry gets disrupted — and your readings can be inaccurate. An inaccurate reading can lead to the wrong insulin dose or a missed warning sign, so this really is important.

• Damaged strips can show falsely high or low blood sugar levels

• Inaccurate readings can lead to incorrect medication adjustments

• Heat, humidity, and light are the top enemies of test strips

• Even a small amount of moisture can ruin an entire vial

The Golden Rules for Storing Test Strips

Most manufacturers design test strips to be stored at room temperature in a dry, dark place. Following a few simple rules will keep them in top condition from the moment you open the box until the last strip is used.

• Store strips between 59°F and 86°F (room temperature)

• Keep them away from direct sunlight and heat sources

• Avoid storing them in the bathroom due to humidity from showers

• Always store strips in their original container with the lid tightly closed

• Never refrigerate test strips unless the label specifically instructs you to

Watch Out for These Common Mistakes

Many people unknowingly ruin their test strips through everyday habits. Being aware of these mistakes is the first step to avoiding them.

• Leaving the vial open while testing — even for a few minutes

• Storing strips in a hot car or near a sunny window

• Touching the test area of the strip with wet or dirty fingers

• Using strips after the expiration date printed on the label

How to Tell If Your Test Strips Have Gone Bad

Sometimes strips get damaged without you realizing it right away. Knowing the warning signs can help you catch the problem before it affects your care. If something seems off, trust your instincts and test with a fresh strip.

• Readings that are unusually high or low without an obvious reason

• Error messages appearing on your glucose meter more than usual

• Strips that look discolored, bent, or have visible moisture damage

• Control solution tests that fall outside the expected range

Traveling With Test Strips? Here's What to Know

Keeping your strips safe while traveling takes just a little extra planning. Temperature swings in cars, airports, and hotels can quickly degrade your supplies. A small insulated pouch or diabetes travel case goes a long way in protecting your strips on the go.

Pairing Good Storage With Quality Supplies

Even the best storage habits won't help if you're starting with low-quality or incompatible strips. Using trusted, brand-compatible test strips is just as important as how you store them. MDS Diabetes carries a wide selection of reliable test strips to match your meter and fit your budget.

Shop Diabetes Supplies at MDS Diabetes

Ready to stock up on test strips you can count on? Visit mdsdiabetes.com to browse our full selection of diabetes testing supplies, or give us a friendly call at (877) 861-3571 — we're always happy to help you find exactly what you need. At MDS Diabetes, we're here to make managing your diabetes a little easier, every single day.