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Having a few issues post lunch

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O_DP_T1

Well-Known Member
Messages
459
Location
United Kingdom
Type of diabetes
Type 1
Treatment type
Insulin
So over the last couple of weeks my post lunch readings are about 9-11 and they seem to hover around there until I get home around 6.30-7pm (the running round on the tbe tubes lowers them) Pre lunch they are usually around 5-7 which is where I like them to be. Usually I have about 30-50g of carbs for lunch and take about 8-10 units of NR for that but it does not seem to work.

Either my insulin to carb ration is wrong OR i'm under calculating the amount of carbs I eat
Morning and evening aren't issues as I weigh out the carbs and think I've worked out a ration that is OK

I've only been on this MDI stuff for about a month so is there any other factors I may have missed out? Any ideas????
 
Ok maybe you've generalised too much but from what you've said, your carb ratios need attention.

30g to 50g of carbs and you take 8 to 10 units.

This means that for 30g of carbs your ratio is 1 unit per 3.75g, but for 50g of carbs your ratio is 1 unit per 5g of carbs.

Your lunch ratio should be the same for any amount of carbs you eat.
 
Also you don't mention how far in front of your food you inject or what insulin your using. It varies by person but I would be taking my fast acting insulin 20-30 mins before eating.
 
If I am at home then I take the NovoRapid about 10-15 mins before food. If out and about like today I end up eating 'eyeballing' the food and then take the shot straight away.

How does one precisely work out a carb to insulin ratio for a specific time of day?
 
For me it was trial and error. I was told to start off using 1u : 10g for each meal. I worked out how much insulin that would be for my usual evening meal and pointed out that 1 : 10 would make me hypo, as I was already using 1 : 12 which gave good results. I was told that 1 : 10 was just a starting point and everyone was different.

If you find that 1u : 10g makes you high, 2 hours after eating, then you need more insulin. Try 1 : 9 or 1 : 8. I found a half unit pen helped, as increases/decreases of 1 unit was too much (I'm insulin sensitive) but many people are fine with 1 unit.
 
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