Step 1
Get a sensor.
Two glucose sensors sell without a prescription in the US. Both are for adults 18 and older who are not on insulin.
No company pays me to list them.
Stelo by Dexcom
No prescription needed. Dexcom says it is not for people on insulin, people with problematic lows, or people on dialysis.
Lingo by Abbott
No prescription needed. Abbott says it is for adults not on insulin and is not intended to diagnose diabetes.
On insulin or another glucose-lowering drug? Talk with your prescriber first, and read Safety first on the main page. Products and rules change. This list is as of September 2026.