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My study back in 1990, together with others, has shown no difference between glucose and glucose polymer in GTT tests.

M.

From: Clinical biochemistry discussion list [mailto:[log in to unmask]] On Behalf Of Greg Watts
Sent: 13 December 2010 00:57
To: [log in to unmask]
Subject: Re: measuring out Polycal for GTT

Oops,

Sorry that's 75g in 300mL.

It is true that Polycal has less osmotic effect, but I would be more concerned about absorption effects of using this than a little added CO2. Surely there is an added enzymatic breakdown step (even though it may be a quick one) which is not present in the standard Glucose tolerance test.


Regards

Greg
________________________________
From: Colley, Michael [mailto:[log in to unmask]]
Sent: Friday, 10 December 2010 11:19 PM
To: Greg Watts; [log in to unmask]
Subject: RE: measuring out Polycal for GTT

I trust it isn't 75g/L  as a litre is about 4 times the recommended volume.
I'm not sure carbonation is part of the standard GTT protocol either - might it affect absorption.

Many people in the UK use Polycal because it has less osmotic effect and thus less "post excess 4X" effect

Weighing strikes me as the best suggestion so far.

Michael
From: Clinical biochemistry discussion list [mailto:[log in to unmask]] On Behalf Of Greg Watts
Sent: 09 December 2010 22:26
To: [log in to unmask]
Subject: Re: measuring out Polycal for GTT

Hi All,

Why don't you interest one of your biomedical suppliers or even a drink company to make up a standard glucose drink for you.

Here in Australia we have at least two companies that do that for us and sell them by the case at less than a dollar a bottle. The 75 g/L bottles are flavoured to stop the sweetness from causing unwanted "reflux" and loss of dose. Both doses are carbonated.

Its trouble free!

Regards

Greg

Deputy Director
Sydney Adventist Hospital
Pathology
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