Roche
I haven’t managed to find some technical information from Roche, but I did find this site:
http://www.diavant.com/diavant/CMSFront.html
It seems to be geared to a higher level than Labtestsonline so I’m guessing it is aimed at a more medical audience than Labtestsonline which is aimed at the patient. A quick nose around seems to suggest that it’s pretty good.