Testing Glucose and Ketones at Home:
Precision Extra and Keto Mojo are examples of testing devices that can be purchased on Amazon or pharmacies without a prescription. The test strips are expensive. The Keto Mojo is a newer device that tests both glucose and ketones.

CGMs (continuous glucose monitors) require a prescription. Freestyle Libre and Dexcom are popular. A sensor is applied to your arm, and the app on your phone continuously displays your glucose level but not your ketones.