Ensure your WarmMark Time-Temp Tag has remained at 77°F/25°C for a minimum of 30 minutes prior to pulling the tab. You can even place it in the refrigerator for 30 minutes before use if your room temperature is higher than 77°F/25°C. This step allows the tag to work as designed.

Activate the WarmMark Time-Temp Tag by folding and pulling up on the tab located at the top. Before activation, the viewing window of the WarmMark should be white. Once activated, place it next to your temperature-sensitive medication. Ensure the WarmMark goes wherever your medication does so you always know if it has gotten too warm.

If the WarmMark experiences temperatures over 86°F/30°C (a common threshold medications shouldn't exceed) for about 30 minutes or less, it will turn pink/red, indicating an unacceptably high temperature. If the WarmMark is with your medication and the viewing window changes colors, you know your medication got too warm.

White/No Color Change

At any point, if the activated WarmMark Time-Temp Tag’s viewing window is white, it means the tag has remained below 86°F/30°C or has not been over that temperature long enough to trigger a color change. An example of a tag that hasn’t seen an excursion.

Pink or Red

When the activated WarmMark has seen temperatures over 86°F/30°C, the viewing window will turn from white to pink/red. This indicates that the tag, and likely your medication, experienced 86°F/30°C for a minimum of 30 minutes or less. An example of a "bad" tag here.