If you have been using a FreeStyle Libre sensor for a while and suddenly heard the word "Plus" attached to it, you are probably wondering what changed and whether you need to do anything about it. Maybe your pharmacy told you your usual sensor is no longer available. Maybe your prescriber mentioned a new prescription. Maybe you just noticed the countdown bar in your app looks different.
Here is the plain answer: Abbott has moved its entire FreeStyle Libre lineup over to the Plus versions, and the original Libre 2 and Libre 3 sensors have been discontinued. This guide explains exactly what is different, what you need to do, and why the change is genuinely good news for most people.
The Short Version: What Actually Changed
If you read nothing else, read this. The Plus sensors are not a different product line. They are updated versions of the sensors you already know, and the changes are small but useful:
- Wear time went from 14 days to 15 days. One extra day per sensor means two sensors a month instead of an awkward schedule that drifted through the calendar.
- Approved ages expanded to 2 and older. The original Libre 2 and Libre 3 were cleared for ages 4 and up, so the Plus versions opened access to younger children.
- Accuracy improved slightly. Both Plus sensors carry an 8.2 percent accuracy rating, a modest gain over the originals.
- Broader pump compatibility. The Plus sensors connect with a wider set of automated insulin delivery systems than their predecessors did.
- Everything else stayed the same. Same app, same reader, same arm placement, same optional alarms, same LibreLinkUp sharing.
The one thing you do need to act on: you need a new prescription. The Plus sensors are dispensed under different product codes, so your old prescription will not automatically convert. That is a paperwork step, not a medical hurdle.
FreeStyle Libre 2 vs. FreeStyle Libre 2 Plus
This is the comparison most people are searching for, and the answer is reassuring. If you were happy with your Libre 2, you will be happy with your Libre 2 Plus, because the daily experience is essentially unchanged.
| Feature | FreeStyle Libre 2 (discontinued) | FreeStyle Libre 2 Plus (current) |
|---|---|---|
| Wear time | Up to 14 days | Up to 15 days |
| Approved ages | 4 and older | 2 and older |
| How you get a reading | Scan with phone or reader | Scan with phone or reader (unchanged) |
| Optional alarms | Yes | Yes (unchanged) |
| App and reader | LibreLink app, Libre 2 reader | Same app, same reader |
| Pump compatibility | Limited | Works with select AID systems |
| Availability | No longer manufactured | Currently available |
The easiest way to tell which one you are wearing right now is the countdown bar at the bottom of your app's home screen. A 14-day countdown means you have an original Libre 2. A 15-day countdown means you already have the Plus. If you see 15 days, you are already set and no action is needed.
Why this matters: the extra day is worth more than it sounds. Fifteen-day wear puts you on a clean two-sensors-per-month rhythm, which makes reordering predictable and reduces the odds of running out mid-cycle. If you want to stay on this sensor, the FreeStyle Libre 2 Plus sensor works with the FreeStyle Libre 2 reader you already own.
FreeStyle Libre 3 vs. FreeStyle Libre 3 Plus
The same pattern holds on the Libre 3 side. The Plus is an incremental update rather than a redesign, and your routine does not change.
| Feature | FreeStyle Libre 3 (discontinued) | FreeStyle Libre 3 Plus (current) |
|---|---|---|
| Wear time | Up to 14 days | Up to 15 days |
| Approved ages | 4 and older | 2 and older |
| Reading frequency | Automatic, every minute | Automatic, every minute (unchanged) |
| Sensor size | Small, flat profile | Same small, flat profile |
| App and reader | LibreLink app, Libre 3 reader | Same app, same reader |
| Pump compatibility | Limited at launch | Connects with several AID systems |
| Availability | No longer manufactured | Currently available |
The most meaningful upgrade here is the pump integration. The FreeStyle Libre 3 Plus sensor works with several automated insulin delivery systems, which the original Libre 3 did not at launch. If you use or are considering a pump, that difference matters considerably. It pairs with the FreeStyle Libre 3 reader if you prefer not to use a phone.
It is completely normal to feel a little wary when a device you rely on gets changed out from under you. Plenty of people have had the experience of an "upgrade" that made things worse. In this case, the daily routine genuinely is identical, and the one habit you have to build is remembering that your sensor now lasts an extra day.
What About the Original FreeStyle Libre and Libre 14 Day?
Some people are further back in the lineup than they realize, especially if a family member has been on the same sensor for years. The original FreeStyle Libre and the FreeStyle Libre 14 Day were scan-only systems with no optional alarms at all. If you are still on one of those, the jump to a Plus sensor is a real upgrade rather than a lateral move.
The single biggest gain is alarms. Original Libre systems could not alert you to a high or a low. You only found out when you scanned. Both current Plus sensors offer customizable high and low alerts, which means you can be warned about an overnight low while you sleep rather than discovering it in the morning. For anyone with reduced awareness of lows, that is a safety feature worth having, and both the American Diabetes Association and the Endocrine Society emphasize that reducing time spent below range is the first priority in glucose management.
If you are making this bigger jump, it is worth a conversation with your prescriber about which Plus sensor to move to rather than defaulting to the closest match. You can browse the current Abbott lineup in our Abbott collection.
Why It Matters
Device transitions create a specific, avoidable risk: gaps in wear. When a prescription needs updating and nobody flags it, people run out of sensors and go days or weeks without data. Those gaps show up later as incomplete reports and missed patterns, and they undo a lot of the benefit a CGM provides in the first place. Catching the prescription update early is the whole game here.
At AdaptHealth Diabetes, our mission is to make diabetes management simpler and more accessible, which very much includes handling transitions like this one so they do not land on you. Our team can coordinate the new prescription with your provider, reverify your coverage under the new product code, and get you shipped without a gap. Explore our education center for more device guides, or see our Learning Center for the full library.
Frequently Asked Questions About the Plus Sensors
Do I need a new prescription to switch to a Plus sensor?
Yes. The Plus sensors are dispensed under different product codes than the originals, so your existing prescription will not carry over automatically. Ask your prescriber to write for the specific Plus sensor you want. This is routine, and most offices handle it quickly, but it does have to happen before your order can ship. If you are close to running out, mention that when you call so the request can be prioritized.
Will my insurance still cover the Plus version?
In most cases yes, and generally at the same level. Coverage for the Libre 2 Plus and Libre 3 Plus has generally mirrored the coverage that applied to their predecessors, including under Medicare for beneficiaries who meet the criteria. That said, the new product codes sometimes trigger a fresh prior authorization on commercial plans. Our team can verify your specific benefits before anything ships so there are no surprises.
Can I still use my old reader with a Plus sensor?
Yes, as long as it is the matching generation. A Libre 2 reader works with the Libre 2 Plus sensor, and a Libre 3 reader works with the Libre 3 Plus sensor. What you cannot do is mix generations, so a Libre 2 reader will not read a Libre 3 or Libre 3 Plus sensor. The same applies to the apps, which are generation-specific. If you are unsure which reader you have, the model name is printed on the back of the device.
What do I do with unused original Libre 2 or Libre 3 sensors?
Use them. Sensors that are still within their expiration date remain safe and effective, and there is no reason to discard them or send them back. Simply finish what you have while your new prescription is processed, and start the Plus sensors when your current stock runs out. That sequencing also avoids any coverage gap during the transition.
Is the Plus version actually more accurate, or is that marketing?
There is a real but modest improvement. Both Plus sensors carry an 8.2 percent accuracy rating, compared with slightly higher figures for the originals. For everyday decisions, that difference is small enough that you would be unlikely to notice it. The changes worth caring about are the extra wear day, the expanded age approval, and the broader pump compatibility. As with any CGM, Abbott advises confirming with a fingerstick meter whenever a reading does not match how you feel.
Need Help Making the Switch?
If your pharmacy told you your sensor is discontinued, or you are not sure whether you are already on a Plus, we can sort it out quickly. AdaptHealth Diabetes coordinates directly with your prescriber for the updated prescription, verifies your insurance under the new product code, and sets up recurring delivery so you are not tracking reorder dates yourself. Reach out through our contact page to get started, or visit our resources page for help with prescriptions and coverage.
For general guidance on CGM use and what your glucose targets mean, the American Diabetes Association offers a clear patient overview at diabetes.org.
Medical Disclaimer: This article is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Device availability, features, and insurance coverage criteria change over time. Always confirm current details with your prescriber, your insurer, and the manufacturer before making a change to your sensor or therapy. Never disregard professional medical advice or delay seeking it because of something you have read here.
Sources
- American Diabetes Association (ADA), CGM and Time in Range: https://diabetes.org/about-diabetes/devices-technology/cgm-time-in-range
- Association of Diabetes Care & Education Specialists (ADCES), danatech FreeStyle Libre 3 Plus device profile: https://www.adces.org/education/danatech/glucose-monitoring/continuous-glucose-monitors-(cgm)/view-compare-cgms/product-detail/freestyle-libre-3-plus
- Association of Diabetes Care & Education Specialists (ADCES), danatech Find & Compare Continuous Glucose Monitors: https://www.adces.org/education/danatech/glucose-monitoring/continuous-glucose-monitors-(cgm)/view-compare-cgms
- Endocrine Society, Time-In-Range and Diabetes: https://www.endocrine.org/patient-engagement/endocrine-library/time-in-range-and-diabetes
