yaleToday Bubs started as a test subject in the Predicted Low Glucose Suspend algorithm for Tandem.  (Official name: “Tandem PLGS Pivotal Trial: A Randomized Clinical Trial to Assess the Efficacy of Predictive Low Glucose Suspend Versus Sensor-augmented Pump Therapy in the Management of Type 1 Diabetes.”) Each participant (I think they said there would be ninety?) spends three weeks on a Tandem X2 pump with the experimental PLGS software, and three weeks on a regular X2.

Other than having to drive halfway across the widest state in our nation to get to Yale, for us there is no downside. This is a super-cool next version of the pump we already use. You know what else is super-cool? The people running this study at Yale. They are really nice people. Going over the consent form, one person inquired: Do you have any questions? Is there anything about this study that makes you uncomfortable?

I was seated across from a tippy pile of binders with a stuffed animal base, and I mentioned this made me uncomfortable.



No one was harmed by falling binders and Bubs started on the PLGS pump this afternoon. I declare it a success. I shall sleep well tonight. I already trust it. Give me. Let me buy. Want that. Good. Yes.


The red columns are where basal insulin was suspended. We did not treat this low with any food. Amazing. SCIENCE!

This is Tandem’s timeline for the new software release.



  1. April · October 16, 2017

    I’m interested in how this goes. My daughter is struggling all of a sudden with very high highs, and very low lows. Probably something with more beta cells dying off, but it’s still interfering with a good night’s sleep.


  2. Lucia Maya · October 16, 2017

    Wow! that’s exciting!


  3. maureenh · October 16, 2017

    So glad to see this! Exciting developments.


  4. Need A Nap2 · October 17, 2017

    Very exciting! Awesome trial to be a part of!! We just ordered an X2 for our oldest last week. She has been on t:slim for 4 years and this development is one of the reasons we chose t:slim again over other companies.


  5. mollyjade · October 17, 2017

    I love living in the future.

    Liked by 1 person

  6. Rick Phillips · October 22, 2017

    I have been using the Medtronic 670G and I love it. Such a great improvement. I hope the Tandem solution works for your little one. There is nothing like it.


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