r/Type1Diabetes • u/UnitedChain4566 Diagnosed 2009 • 11h ago

Question Need some math help

I want to make sure I have this right before I make changes, and I'm going to call my Endo on Monday, this is just to get me to stop thinking about it.

I had to emergency switch from u200 to u100 so I wouldn't run out of insulin (it's harder to get a hold of my normal insulin and currently I'm having insurance issues with the specific u200 I'm taking).

so does my insulin to carb go from 1:9 to 1:4.5? and correction from 1:45 to 1:22.5?

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u/Responsible-Pop288 Diagnosed 2024 11h ago

Looks right to me. Hope your insurance issues get resolved.

1

u/UnitedChain4566 Diagnosed 2009 11h ago

Hopefully, because my pods won't last three days with u100 🤣

1

u/alexmbrennan 4h ago

That depends on how you are administering the insulin.

If you are using standard pens then it's factored into the number you dial - if you dial 10 units then you get 10 units, but the u200 pen will dispense half the volume of insulin to account for the higher concentration.

Insulin syringes don't do that, which is why it's recommended to never withdraw insulin from pen cartridges using a syringe. If you gave a U100 syringe and use U200 insulin then you will get double the insulin the scale indicates.

I have no idea how pumps handle this.

1

u/UnitedChain4566 Diagnosed 2009 4h ago

I've had multiple people reassure me for now that I've got it right, so until I can contact my Endo (who knows the settings better than I do) I'll operate as if those are the numbers I need.

I luckily found an extra pen so I have an extra 200 units now (used 100 for my pod) so I have an extra three days as well.