How many units of insulin?

How many units of insulin would you have on
1.5:1 ratio
for 3 CPs / being 30g of carbs?

41/2 (4.5)

Thank you Marian!

Hi,

Don't be frightened by this, but this is how it works mathematically.

Insulin units = C/10 x R
Carbs = I/R x10
Ratio = I/C x 10

Where C = Carbohydrate in grams
I = Insulin in units
R = Ratio ( e.g. 1:1)

So, for the values you gave:

C/10 x R (You only use the first figure (or the top figure, depending on how the ratio is written))

30/10 x 1.5 = 4.5

I hope this helps for the future.

Kind regards,

Roger

PS
A ratio, say 1 to 1, can be written as 1 to 1 or as 1:1 or as 1/1

For a ratio of 1 to 10 these would be - 1 to 10, or 1:10 or 1/10

Also: If you don't have a pen that allows you to dial up half a unit of insulin, you should round up 4.5 units to 5 units.

Alan Constable said:
Also: If you don't have a pen that allows you to dial up half a unit of insulin, you should round up 4.5 units to 5 units.

How many units of insulin would you have on
1.5:1 ratio
for 5 CPs / being 52.0g of carbs?

Am i correct in guessing it would be 7u or 8u?

My pen only allows me to dial up in 1 units not half units.

You shouldn't need to guess. There will be a calculator on your computer, and on your phone.

If you want to work in CPs it is 1.5 times 5 = 7.5 which, as Alan says, should be rounded up to 8. Unless of course, you know that you are likely to swing on the low side after your meal.