Don't forget that in many locations where OGTT performed [often unnecessarily] there won't be ready access to scales [also, would be need to QA scales as it's for dosing??]
Lucozade not really an option as volume required far exceeds 300mL as per WHO protocol
dj
Dr David James
Clinical Director Somerset Pathology Service & Consultant Chemical Pathologist
Department of Pathology
Taunton & Somerset NHS Trust
Taunton
TA1 5DA
Tel: 01823 34 22 72
Cell: 077 6688 0838
Fax: 01823 27 10 23
>>> Greg Watts <[log in to unmask]> 13/12/2010 00:56 >>>
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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