Basal-IQ™ Technology


Proven to reduce time below 70 mg/dL1

The t:slim X2™ Insulin Pump with Basal-IQ™ Technology predicts glucose levels 30 minutes ahead and suspends insulin to help reduce the time and frequency of low-glucose events. Integrated with Dexcom’s latest G6® continuous glucose monitoring (CGM) system, the Basal-IQ feature works with no fingersticks required.*

Simple training

Technology that’s simple to teach and learn mitigates the training burden on your practice. Ninety-one percent of study participants said the Basal-IQ feature was easy to use.2



Operates silently in the background without additional alerts and alarms beyond standard CGM and pump notifications.


of participants felt very confident using the system.1

Responsive Insulin Delivery

Responsive system can turn insulin delivery on and off as often as every five minutes.

  • No minimum insulin suspension period – insulin delivery can resume with first upward CGM reading.
  • No refractory period during which the feature is unavailable.
  • Can suspend insulin for up to two hours within a 2.5-hour rolling window.


No complicated “modes”

The Basal-IQ feature on the t:slim X2 Insulin Pump has no complicated settings to manage and operates in the background without constant input or interaction. The user must only decide whether he or she wants the feature on or off.




"My 13-year-old son manages his care quite well, but his schedule with gym class after lunch often causes his BG to drop. When this happens, his class time is interrupted. With Basal-IQ during the PROLOG study, Russell spent more time in class and less time taking care of his medical needs."

Kathleen B.

Mother of study subject

t:slim X2 Insulin Pump with Basal-IQ Technology




No fingersticks

With Dexcom G6 CGM integration, the Basal-IQ feature on the t:slim X2 Insulin Pump works with no fingersticks required for calibration or mealtime dosing.* Plus, it has the ability for your patients to share real-time CGM data on a smart device with up to five followers.

Dexcom G6 CGM



How does Basal-IQ Technology work?

Basal-IQ Technology uses a simple linear regression algorithm that predicts glucose levels 30 minutes ahead based on 3 of the last 4 last consecutive CGM readings. If the glucose level is predicted to be less than 80 mg/dL, or if a CGM reading falls below 70 mg/dL, insulin delivery is suspended. Insulin delivery resumes as soon as sensor glucose values begin to rise. Insulin may be suspended for a minimum of 5 minutes and a maximum of 2 hours within a 2.5-hour rolling window.

How Basal-IQ Technology Works




Try out the new Basal-IQ feature with our free demo app.

Search for t:simulator™ wherever you purchase apps, or click the badges below to visit the download page.

AppBadge_AppleStore AppBadge_GooglePlay

*If glucose alerts and CGM readings do not match symptoms or expectations, use a blood glucose meter to make diabetes treatment decisions.
†Users have the option to request alerts when insulin is suspended and when it resumes. Patient will receive the standard CGM alerts and alarms related to low glucose levels that require attention.
‡ Separate Follow App required. Dexcom G6 CGM sold separately. Transmitter can only be paired with one medical device (either a Dexcom receiver or t:slim X2 Pump) and one consumer device (phone or tablet) at the same time.

1. Forlenza GP, Li Z, Buckingham BA, Pinsker JE, et al. Predictive low glucose suspend reduces hypoglycemia in adults, adolescents, and children with type 1 diabetes in an at-home randomized crossover study: Results of the PROLOG trial. Diabetes Care. 2018 [In Press].
2. Pinsker, et al. Exceptional Usability of Tandem t:slim X2 Insulin Pump with Basal-IQ Predictive Low Glucose Suspend (PLGS): The PROLOG Study. Poster presented at: American Diabetes Association 78th Scientific Sessions; June 22-26, 2018; Orlando, FL.