Answer
Oct 08, 2026 - 09:52 AM
The FreeStyle Libre 3 Plus sensor is considered highly accurate for measuring blood sugar, with a mean absolute relative difference (MARD) of around 7.8%, which is comparable to other leading continuous glucose monitors. Its accuracy has been validated in clinical studies, but as with all CGMs, occasional discrepancies can occur, especially during rapid glucose changes. Users should confirm readings with a fingerstick test if symptoms don’t match the sensor’s data.
