What is a one-sentence summary of the following article?
The carrier tube will protect the EpiPen so that it can safely be used when needed. Keep the safety release on until you need to use the EpiPen. Most EpiPens have a "window" that allows you to see through the packaging to the medicine inside. The medicine should be completely clear. If it looks cloudy or otherwise discolored, then that EpiPen has lost potency due to exposure to extreme temperatures.This can occur anytime before the expiration date. Depending on the temperature exposure and duration it may have lost significant or all of its potency.  You can use it in an absolute emergency, but you should replace it as soon as possible. Your EpiPen can be kept in temperatures between 59° to 86°F (15° to 30°C). It should generally be stored at room temperature.  Do not refrigerate it. Do not expose to extreme cold or heat. The EpiPen has a limited life and should be replaced when the date is approaching. An expired EpiPen might not be able to save the life of a patient experiencing anaphylaxis.  If you don’t have anything else at hand, use the expired EpiPen. Degraded epinephrine loses potency but does not transform into a harmful compound. It’s always better than nothing. Once an EpiPen has been used, it should be discarded safely. To do so, bring it to the pharmacy.

Summary:
Keep the EpiPen in its case until it is needed. Look through the viewing window. Store your EpiPen in the right temperature. Check the expiration date.