Sibionics
Sibionics GS1
As of August 2026 we track 6 continuous glucose monitors available here, and the cheapest one you can buy without a prescription is the Dexcom Stelo at about $99.00 a month.
Specifications
| Wear time | 14 days |
|---|---|
| Warm-up | 60 minutes |
| Accuracy (MARD) | 8.83% (manufacturer stated) |
| Readings | every 5 min |
| Alarms | Yes |
| Prescription | Not required |
What does the accuracy figure mean?
MARD is the average gap between what the sensor says and what a laboratory blood test says, as a percentage. A 10% MARD means readings are off by about 10% on average — so a true 7.0 mmol/L might show as anywhere around 6.3 to 7.7. Lower is better. Most current sensors sit under 10%; twenty years ago they were over 20%. No sensor is exact, which is why treatment decisions still get confirmed with a fingerstick when a reading does not match how you feel.
manufacturer stated — Sibionics
Pricing
Not published
to try
Not published
per year
- per sensor · 14 days
- Not published
- per month
- Not published
Prices last checked: 2026-08-05
What works well
- Markedly cheaper than the Abbott and Dexcom sensors, and sold directly online
- Has high and low glucose alarms, which the over-the-counter sensors from Abbott and Dexcom do not
- Calibration-free, with readings every five minutes
What to watch out for
- No peer-reviewed accuracy study — the published figure is the manufacturer’s own
- Smaller support and clinical footprint than Abbott, Dexcom or Medtronic
- Not integrated with insulin pumps or automated insulin delivery systems
Our verdict
The most interesting budget option: it costs well under the mainstream sensors and, unusually for a sensor you can buy without a prescription, it has alarms. The trade-off is that you are trusting the manufacturer’s own accuracy figure rather than an independent one.
Common questions
- How accurate is the Sibionics GS1?
- Sibionics states 8.83% MARD in adults and 8.7% in children aged 3–17 on its own product page. We have found no independent peer-reviewed study, so treat that figure as a manufacturer claim rather than a verified one.
- Do you need a prescription for the Sibionics GS1?
- No. It is sold directly to consumers online, including through general retailers.