Hi Abar,  I recommend Exocell

http://www.exocell.com/reagents.html

for glycated Hb standards.

Glycated proteins can be isolated using immobilized boronic acid. These are available from many companies including Fisher

https://tools.thermofisher.com/content/sfs/manuals/MAN0011297_Immobil_Boronic_Acid_Gel_UG.pdf

thank you so much, Steingrimur Stefansson 

is that Glycated standard blood or pure protein (i don't want blood and all standard i saw it commercially are blood) 

and great for that acid, I will try to order it and do the isolation 

thank you again