Quick answer: The FreeStyle Libre 2 Reader is a small handheld device that displays glucose data from a FreeStyle Libre 2 (or Libre 2 Plus) sensor. A painless one-second scan shows your current glucose reading, the last 8 hours of data, and a trend arrow - no fingerstick needed - and the reader supports optional real-time high/low alarms. It also doubles as a standalone blood glucose and ketone meter through its built-in test-strip port. Compatible only with FreeStyle Libre 2 sensors. A prescription is required.
What is the FreeStyle Libre 2 Reader?
The FreeStyle Libre 2 is a continuous (flash) glucose monitoring system: a sensor worn on the back of the upper arm measures glucose, and the reader displays the data. A one-second scan shows the current glucose reading, the latest 8 hours of glucose data, and a trend arrow showing whether levels are rising, falling, or changing slowly. The reader can scan through clothing, stores up to 90 days of glucose data, and has a backlit colour touchscreen you can read in the dark. Unlike scan-only systems, the Libre 2 reader can also deliver optional real-time alarms when glucose goes too high or too low.
Key features
- Painless one-second scan - current reading, 8-hour history, and trend arrow; no fingerstick.
- Optional real-time alarms - customizable high and low glucose alerts.
- Scans through clothing - capture data when held 1-4 cm from the sensor.
- Built-in meter - doubles as a standalone blood glucose and ketone meter via a test-strip port.
- Backlit color touchscreen - easy to read, even in the dark.
- Stores up to 90 days of data - with easy-to-read history graphs.
- Small and lightweight - about 95 × 60 × 16 mm, 65 g.
Specifications
| Specification | Detail |
| Product type | CGM reader (display device) |
| Reading method | 1-second scan (1–4 cm range) |
| Alarms | Optional real-time high/low |
| Built-in meter | Yes (blood glucose & ketone test strips) |
| Data storage | Up to 90 days |
| Screen | Backlit color touchscreen |
| Dimensions / weight | ~95 × 60 × 16 mm / 65 g |
| Compatibility | FreeStyle Libre 2 & Libre 2 Plus sensors only |
| Ages | 4+ (2+ with Libre 2 Plus sensor) |
| Prescription | Required (U.S.) |
Is it compatible with my sensor?
The Libre 2 Reader works only with FreeStyle Libre 2 and Libre 2 Plus sensors - it is not compatible with FreeStyle Libre 3. A compatible smartphone running the FreeStyle LibreLink app is an alternative to the reader; to use the phone, you start the sensor with the app. The FDA requires a prescription for the FreeStyle Libre 2 system.
Frequently asked questions
What does the reader do? It scans your FreeStyle Libre 2 sensor and displays your current glucose reading, the last 8 hours of data, and a trend arrow, and it can sound optional high/low alarms.
Do I need the reader if I have a smartphone? Not necessarily — the FreeStyle LibreLink app is an alternative. Many people use the reader as their main device or as a backup.
Which sensors does it work with? FreeStyle Libre 2 and Libre 2 Plus sensors only. It does not work with FreeStyle Libre 3.
Can it test my blood glucose directly? Yes — it has a built-in port for blood glucose and ketone test strips, so it doubles as a standalone meter.
Can I scan through clothing? Yes — hold the reader within about 1–4 cm of the sensor, even over clothing.
Do I need a prescription? Yes. In the U.S., the FreeStyle Libre 2 system requires a valid prescription.
Can I get it delivered in Brooklyn or shipped nationwide? Yes — Task Supply Corp offers FedEx shipping throughout the continental U.S., plus local pickup and delivery in Brooklyn and all five boroughs of New York City.
This is a prescription medical device. Use it according to Abbott's instructions for use and your healthcare provider's guidance, and use a fingerstick if readings don't match your symptoms.