Within 1 hour.
Once the test card is removed from the pouch, perform the test as soon as possible. Use the test card within 1 hour after opening the foil pouch.
We are currently experiencing an issue where devices may not successfully pair with the Wyze app. Our team is aware and looking into it. Thank you for your patience while we work to get this resolved. Feel free to keep an eye out for updates https://support.wyze.com/hc/en-us/articles/360015979872-Service-Status-Known-Issues
Once the test card is removed from the pouch, perform the test as soon as possible. Use the test card within 1 hour after opening the foil pouch.