# \#insulin-duration

**URL:** https://forum.fudiabetes.org/tag/insulin-duration/286.md

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## [Insulin duration](https://forum.fudiabetes.org/t/insulin-duration/2343)

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**Author:** [@CarolynA](https://forum.fudiabetes.org/u/CarolynA)\
**Replies:** 10\
**Last updated:** [October 15, 2017, 10:26pm UTC](https://forum.fudiabetes.org/t/insulin-duration/2343 "2017-10-15T22:26:32Z")

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What is the best method for testing insulin duration? I can tell from a no-dinner day that my lantus wears off around 20 hours. How about fast acting insulin? How do I get a better estimate of my Humalog duration?

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## [One change that has made a huge difference!](https://forum.fudiabetes.org/t/one-change-that-has-made-a-huge-difference/1618)

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**Author:** [@TiaG](https://forum.fudiabetes.org/u/TiaG)\
**Replies:** 8\
**Last updated:** [August 19, 2017, 5:58am UTC](https://forum.fudiabetes.org/t/one-change-that-has-made-a-huge-difference/1618 "2017-08-19T05:58:53Z")

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So, since Samson was diagnosed he’s maintained pretty good control, thanks to the artificial pancreas algorithm he uses (openAPS), but there were at least two or three times a day when we had baked in lows we’d have to p…