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OGTT Home Test

VinnyJames

VinnyJames

Well-Known Member
Messages
624
Location
Liverpool
Type of diabetes
Treatment type
Diet only
What do these results tell me?

Before the test I had no metformin for7 days.
Little exercise (on hols)
Bad diet - up to 200g carbs
Fasted for 10 hours
Drank 425ml of original lucozade
Followed by full English breakfast (no toast). Couldn't get out of the brekkie as at relatives house.
At 90 mins meter was 8.5
At 2 hours - 6.9
At 3 hours - 5.2

What do these results tell me?


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what was you before the test?

i dont know the answer to your question, im just curious, those numbers sound bloody perfect though, look forward to the explanation


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1) what does your fasting BG show before OGTT?
2) in effect you "OGTT"d with a dose of carbs = 73g(Lucozade)+?(full English)
so you haven't got enough data to give a full picture! that said if you ignore the Full English, your OGTT out @ 2hrs would suggest the upper end of normal. A more thorough testing(testing at T= 15,30,45,60,75,90,105,120min)may show that only your primary insulin response may be compromised and your secondary response is "OK".
All depends on how you peak, and how your BG recovers.
 
Primary is due to the stored insulin that is initially dumped into the system to "mop up" the glucose released by the food, secondary is the insulin cranked out by the pancreas to mop up the remaining glucose. so in a "normal body we have a reserve of insulin (primary) ready to deal with glucose and then manufacture more insulin as required(secondary)
 
The numbers show you passed the test easily. I'd do two things when you do it again. Firstly take readings at 30 45 and 60 mins as this will give you an idea of your first phase response. Secondly take some first thing in the morning FBG tests and see if you pass those as well I.e under 7. I'd do the tests around 45 mins to an hour after you wake up but obviously before you eat breakfast. The reason is I can easily pass an ogtt nowadays but consistently eating over 150g per day pretty quickly means I start to fail an FBG test.
 
Will be interested to see. The ogtt I did about a month ago had me at 5.3 after two hours but over 12 early on
 
It went the other way! I was 10.2 after 90 mins but ran out of testing strips!!

Gone straight back to low carb after 5-6 days of bad diet for the OGTT's.

Felt bloated too with the changed diet.

I'm going to ask the Dr for an OGTT in a few weeks. Will I be asked to high carb? It's awful lol...


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But why do you want your Dr to do an OGTT? As you are diagnosed already?I did the test recently and believe me, I will never do it again if at all avoidable!
 
VinnyJames said:
It went the other way! I was 10.2 after 90 mins but ran out of testing strips!!

Gone straight back to low carb after 5-6 days of bad diet for the OGTT's.

Felt bloated too with the changed diet.

I'm going to ask the Dr for an OGTT in a few weeks. Will I be asked to high carb? It's awful lol...


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Click to expand...

Sounds like the combination of the two tests would produce a graph roughly like mine. Not an expert but what I think it shows is that your first phase insulin response (roughly 0 to 60mins) is still somewhat damaged but your second phase response (60 mins +) is pretty good. What I've taken from doing mine is I can get away with more carbs on average than I could but not back to "normal"

If you do the official OGTT then yes you'll have to do the greater than 150g / day for 3 days. If you don't the OGTT will be invalid as it will likely show you worse than you actually are.

If you enjoy LC (like me) then I don't see a reason to fundamentally change but you can probably get away with more "time off" for bad behaviour.
 
It will show worse because your pancreas bases it first phase response on the amount of carbs it expects you've eaten rather than how many you have actually eaten. So if you lc then it will be expecting another lc meal not to be hammered by 75g of pure glucose! It will release a smaller quantity of insulin and that will make you spike higher and make your second phase response take longer to deal with the higher spike. By eating 150g for three days prior to the test you retrain your pancreas to release a larger quantity of insulin so when the glucose hits you get a more accurate result. Hope that makes sense.

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