# Tandem Control IQ

**URL:** <https://forum.fudiabetes.org/t/tandem-control-iq/9219>\
**Category:** Pump\
**Created:** [January 28, 2020, 7:57pm UTC](https://forum.fudiabetes.org/t/tandem-control-iq/9219 "2020-01-28T19:57:29Z")\
**Posts on this page:** 20\
**Page:** 4

<div class="post-metadata">

**Author:** ![sal](https://avatars.discourse-cdn.com/v4/letter/s/58f4c7/32.png) [@sal](https://forum.fudiabetes.org/u/sal)\
**Post date:** [February 23, 2020, 4:08am UTC](https://forum.fudiabetes.org/t/tandem-control-iq/9219/61 "2020-02-23T04:08:29Z")

</div>

Thanks, RCA221. That’s what I was guessing, (T1 for 42 years here), but I hadn’t seen those particular abbreviations. I think I’ve only seen it spelled out as carb:insulin ratio. Now I’ll be able to use the lingo, much easier.

---

<div class="post-metadata">

**Author:** ![RCA221](https://avatars.discourse-cdn.com/v4/letter/r/7ab992/32.png) [@RCA221](https://forum.fudiabetes.org/u/RCA221)\
**Post date:** [February 23, 2020, 12:34pm UTC](https://forum.fudiabetes.org/t/tandem-control-iq/9219/62 "2020-02-23T12:34:41Z")

</div>

I just call ISF my correction ratio. Easier for me. Already too may anagrams with this disease.

---

<div class="post-metadata">

**Author:** ![Breezy](https://avatars.discourse-cdn.com/v4/letter/b/b3f665/32.png) [@Breezy](https://forum.fudiabetes.org/u/Breezy)\
**Post date:** [February 23, 2020, 9:54pm UTC](https://forum.fudiabetes.org/t/tandem-control-iq/9219/63 "2020-02-23T21:54:07Z")

</div>

Acronyms.

---

<div class="post-metadata">

**Author:** ![RCA221](https://avatars.discourse-cdn.com/v4/letter/r/7ab992/32.png) [@RCA221](https://forum.fudiabetes.org/u/RCA221)\
**Post date:** [February 23, 2020, 10:14pm UTC](https://forum.fudiabetes.org/t/tandem-control-iq/9219/64 "2020-02-23T22:14:15Z")

</div>

Yup, thanks.

---

<div class="post-metadata">

**Author:** ![churcr](https://yyz2.discourse-cdn.com/flex030/user_avatar/forum.fudiabetes.org/churcr/32/7842_2.png) [@churcr](https://forum.fudiabetes.org/u/churcr)\
**Post date:** [March 8, 2020, 8:50pm UTC](https://forum.fudiabetes.org/t/tandem-control-iq/9219/65 "2020-03-08T20:50:42Z")

</div>

Well, I just finished the Control IQ training and have the link to update my pump. The whole process started on 1/31/20 so it took awhile. I guess I’ll update the pump and see how things go. I’m a bit concerned about the statement that Tandem says that Control IQ will only work with U100 insulin because I’ve been using Humalog U200 for about 3 months now. Of course the pump doesn’t know that and my doctor had to change all the settings to trick the pump.

The training also said that you have to enter body weight and daily insulin for it to work and that daily insulin couldn’t be more than 100 units. I’m using 95 units per day with U200 so if I had U100, it would be double that. Any input from people using U200 would be good to hear.

---

<div class="post-metadata">

**Author:** ![Jason99](https://yyz2.discourse-cdn.com/flex030/user_avatar/forum.fudiabetes.org/jason99/32/8079_2.png) [@Jason99](https://forum.fudiabetes.org/u/Jason99)\
**Post date:** [March 8, 2020, 9:08pm UTC](https://forum.fudiabetes.org/t/tandem-control-iq/9219/66 "2020-03-08T21:08:46Z")

</div>

In my experience, control iq works so much better with Fiasp or Novolog. Humalog takes too long to start working when the pump makes any basal rate changes.

---

<div class="post-metadata">

**Author:** ![churcr](https://yyz2.discourse-cdn.com/flex030/user_avatar/forum.fudiabetes.org/churcr/32/7842_2.png) [@churcr](https://forum.fudiabetes.org/u/churcr)\
**Post date:** [March 15, 2020, 11:21pm UTC](https://forum.fudiabetes.org/t/tandem-control-iq/9219/67 "2020-03-15T23:21:40Z")

</div>

1 week update on Control IQ. So far I’m very happy. I had to increase my morning basal and lower my afternoon basal just a bit. Since doing that, Control IQ has been working as designed. My time in range for the past week was 90% which is a 13% increase.

The one irritating thing I found was the 200 mg/dl warning that I’ve get on occasion. It says that Control IQ has made adjustments but my blood glucose is still over 200 mg/dl and that I should check my pump, reservoir, tubing, and infusion set. I’m sure that I’m not the only diabetic who has blood glucose readings above 200 after a meal. I wish I could turn the warning off. The good news is that the readings above 200 have decreased since using Control IQ.

---

<div class="post-metadata">

**Author:** ![Wolf](https://avatars.discourse-cdn.com/v4/letter/w/e19adc/32.png) [@Wolf](https://forum.fudiabetes.org/u/Wolf)\
**Post date:** [September 21, 2020, 8:24pm UTC](https://forum.fudiabetes.org/t/tandem-control-iq/9219/68 "2020-09-21T20:24:45Z")

</div>

Hi, I’m from Germany and I’ll get the the t:slim with basal iq. Next year the control iq upgrade process should start. Does anybody know if medicare has to pay for the upgrade or was it included in the pumps price? Nobody seems to know it here; I’m afraid that health insurances will only pay for it if they’ll get not only a prescription but also a bunch of paper with all my data for the last three months and so on.

---

<div class="post-metadata">

**Author:** ![Chris](https://yyz2.discourse-cdn.com/flex030/user_avatar/forum.fudiabetes.org/chris/32/382_2.png) [@Chris](https://forum.fudiabetes.org/u/Chris)\
**Post date:** [September 21, 2020, 9:57pm UTC](https://forum.fudiabetes.org/t/tandem-control-iq/9219/69 "2020-09-21T21:57:27Z")

</div>

I can’t speak about the Medicare process, but once we had the pump, all of the upgrades have been free of charge as long as the pump is in warranty. We started out about 5 years ago with just the Tslim, and have added Basal IQ, and then Control IQ at no additional charge.

---

<div class="post-metadata">

**Author:** ![Wolf](https://avatars.discourse-cdn.com/v4/letter/w/e19adc/32.png) [@Wolf](https://forum.fudiabetes.org/u/Wolf)\
**Post date:** [September 21, 2020, 10:00pm UTC](https://forum.fudiabetes.org/t/tandem-control-iq/9219/70 "2020-09-21T22:00:45Z")

</div>

Thanks, did you pay the pump by yourself?

---

<div class="post-metadata">

**Author:** ![Chris](https://yyz2.discourse-cdn.com/flex030/user_avatar/forum.fudiabetes.org/chris/32/382_2.png) [@Chris](https://forum.fudiabetes.org/u/Chris)\
**Post date:** [September 21, 2020, 10:28pm UTC](https://forum.fudiabetes.org/t/tandem-control-iq/9219/71 "2020-09-21T22:28:38Z")

</div>

No our insurance paid for the pump we just owed the copay, but of course this was not Medicare, but standard commercial insurance.

---

<div class="post-metadata">

**Author:** ![MM2](https://yyz2.discourse-cdn.com/flex030/user_avatar/forum.fudiabetes.org/mm2/32/3032_2.png) [@MM2](https://forum.fudiabetes.org/u/MM2)\
**Post date:** [September 21, 2020, 10:29pm UTC](https://forum.fudiabetes.org/t/tandem-control-iq/9219/72 "2020-09-21T22:29:57Z")

</div>

> [@Wolf](#):
>
> Next year the control iq upgrade process should start.

Per this article, no charge in US through year end 2020.

> **[Tandem Diabetes Care Announces No-Cost Software Updates for t:slim X2 Insulin...](https://investor.tandemdiabetes.com/news-releases/news-release-details/tandem-diabetes-care-announces-no-cost-software-updates-tslim-x2)**
>
> SAN DIEGO --(BUSINESS WIRE)--Aug. 1, 2019-- Tandem Diabetes Care, Inc. (NASDAQ: TNDM), a leading insulin delivery and diabetes technology company, today announced it is offering no-cost feature updates for t:slim X2 insulin pump customers in the...

Why do you need to wait until next year ?  
Are you in Germany, but have US medicare?

---

<div class="post-metadata">

**Author:** ![Trying](https://yyz2.discourse-cdn.com/flex030/user_avatar/forum.fudiabetes.org/trying/32/4078_2.png) [@Trying](https://forum.fudiabetes.org/u/Trying)\
**Post date:** [September 21, 2020, 11:31pm UTC](https://forum.fudiabetes.org/t/tandem-control-iq/9219/73 "2020-09-21T23:31:37Z")

</div>

> [@MM2](#):
>
> SAN DIEGO --(BUSINESS WIRE)–Aug. 1, 2019-- Tandem Diabetes Care, Inc. (NASDAQ: TNDM), a leading insulin delivery and diabetes technology company, today announced it is offering no-cost feature updates for t:slim X2 insulin pump

The date on that link is from 2019! I guess it is still valId through end of 2020…

---

<div class="post-metadata">

**Author:** ![MM2](https://yyz2.discourse-cdn.com/flex030/user_avatar/forum.fudiabetes.org/mm2/32/3032_2.png) [@MM2](https://forum.fudiabetes.org/u/MM2)\
**Post date:** [September 22, 2020, 2:02am UTC](https://forum.fudiabetes.org/t/tandem-control-iq/9219/74 "2020-09-22T02:02:59Z")

</div>

> [@Trying](#):
>
> The date on that link is from 2019!

Suppose they could have made another announcement to extend, so a call to Tandem could verify.

---

<div class="post-metadata">

**Author:** ![elver](https://yyz2.discourse-cdn.com/flex030/user_avatar/forum.fudiabetes.org/elver/32/8772_2.png) [@elver](https://forum.fudiabetes.org/u/elver)\
**Post date:** [September 22, 2020, 2:58am UTC](https://forum.fudiabetes.org/t/tandem-control-iq/9219/75 "2020-09-22T02:58:06Z")

</div>

Free updates for in warranty pumps are still valid. I just (in last 2 weeks) updated mine. It requires a new Rx from your provider.

---

<div class="post-metadata">

**Author:** ![Wolf](https://avatars.discourse-cdn.com/v4/letter/w/e19adc/32.png) [@Wolf](https://forum.fudiabetes.org/u/Wolf)\
**Post date:** [September 22, 2020, 1:52pm UTC](https://forum.fudiabetes.org/t/tandem-control-iq/9219/76 "2020-09-22T13:52:28Z")

</div>

@MM2

> have US medicare?

Sorry for confusing all of you. I quick searched in dict for medicare and found s.th. like health insurance. I’m lazy so I used one word instead of two.  
thank you and @Chris and others for your answers, helps me to stay calm - why should tandem act in another way in Europe than in US.  
I hope for all german PWD who are not able to build a DIY Loop System to get a better AID than the MM670G.  
Are there anywhere inside the forum comparisons between loop or openaps and Control IQ?

---

<div class="post-metadata">

**Author:** ![Chris](https://yyz2.discourse-cdn.com/flex030/user_avatar/forum.fudiabetes.org/chris/32/382_2.png) [@Chris](https://forum.fudiabetes.org/u/Chris)\
**Post date:** [September 22, 2020, 2:48pm UTC](https://forum.fudiabetes.org/t/tandem-control-iq/9219/77 "2020-09-22T14:48:24Z")

</div>

So, Loop and Open APS are fully programmable and there is lots of information about them on our site. We have quite a few loopers. These don’t really compare in any way to Control IQ, because Control IQ is not fully programmable, yet it works well for many people. So if you were interested in your algorithm managing your A1c in the 5’s you would not easily be able to achieve that with Control IQ. Also, the looping programs require you to tweak a large number of settings, once dialed in, the results are amazing for many. In contrast, Control IQ will only require you to set a couple of things. Realistically most people will find Control IQ keeps their A1c in the 6’s and 7’s with a reasonable diet. Of course, if you are willing to eat a pretty restricted diet, you can get your A1c lower with Control IQ, but that is more a function of the diet than the algorithm.

---

<div class="post-metadata">

**Author:** ![Trying](https://yyz2.discourse-cdn.com/flex030/user_avatar/forum.fudiabetes.org/trying/32/4078_2.png) [@Trying](https://forum.fudiabetes.org/u/Trying)\
**Post date:** [September 22, 2020, 11:46pm UTC](https://forum.fudiabetes.org/t/tandem-control-iq/9219/78 "2020-09-22T23:46:29Z")

</div>

I am using DIY Loop on iOS with Insulet OmniPod pump and Dexcom G6.

Yes, per Chris, I don’t think there is any forum comparison of DIY Loop with Control IQ, but Chris’ description of the differences jives with my view. Loop is customizable for your own requirements, so you can set your own target range. I believe Control IQ restricts a low target range. Loop also supports auto-bolus so that it will initiate small boluses based on predicted BG while taking all the other settings into consideration, including Basal, IC, ISF, Max Basal, Max Bolus, Suspend Threshold, etc. To get the full details of Loop, visit its well written online documentation site [here](https://loopkit.github.io/loopdocs/).

Chris is right, there are several of us loopers here, so if you have any specific questions, please ask away!

---

<div class="post-metadata">

**Author:** ![bostrav59](https://yyz2.discourse-cdn.com/flex030/user_avatar/forum.fudiabetes.org/bostrav59/32/7281_2.png) [@bostrav59](https://forum.fudiabetes.org/u/bostrav59)\
**Post date:** [March 25, 2025, 7:43pm UTC](https://forum.fudiabetes.org/t/tandem-control-iq/9219/79 "2025-03-25T19:43:54Z")

</div>

Resurrecting this old old thread - as Tandem has now launched Control IQ +.

Has anyone tried it yet?

> Control-IQ+ technology is now available
> 
> Tandem Diabetes Care is thrilled to announce that Control-IQ+ technology — the newest and most innovative version of our predictive algorithm — is now available! A new prescription is not required if you’re already using Control-IQ technology, so you can update your Tandem insulin pump today.

---

<div class="post-metadata">

**Author:** ![CarlosLuis](https://yyz2.discourse-cdn.com/flex030/user_avatar/forum.fudiabetes.org/carlosluis/32/11389_2.png) [@CarlosLuis](https://forum.fudiabetes.org/u/CarlosLuis)\
**Post date:** [March 25, 2025, 9:06pm UTC](https://forum.fudiabetes.org/t/tandem-control-iq/9219/80 "2025-03-25T21:06:53Z")

</div>

Well I was going to do that but a storm took out our internet service. It’s MW to our house and I think the router that connects to our in-house WIFI is toast. Someone is on their way.

[Previous page](https://forum.fudiabetes.org/t/tandem-control-iq/9219.md?page=3)

[Next page](https://forum.fudiabetes.org/t/tandem-control-iq/9219.md?page=5)
