Testing a food's glycemic index can involve 10 or more healthy people eating enough of the food to provide 50 grams of carbohydrates, with blood sugar measured repeatedly over two hours.
Notes on verification
Confirmed by multiple independent authoritative sources including University of Sydney's official GI resource, patent documentation, and peer-reviewed methodology papers describing the standard protocol. [tier=gold indep_score=0.867 clusters=3 claim_tier=notable]
Sources
- Low-glycemic index diet: What's behind the claims? (seed:food_and_diet)
- https://glycemicindex.com/about-gi/ (corroboration)
- https://www.omnicalculator.com/health/gi (corroboration)
- https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/9486504 (corroboration)