GI Interlab 2 Study: Measuring the Glycaemic Index (GI) of Foods

This study has been completed.
Sydney University Glycaemic Index Research Services
ILSI Europe
Information provided by:
Glycaemic Index Testing, Inc. Identifier:
First received: November 30, 2005
Last updated: June 7, 2006
Last verified: June 2006

The purpose of this study is to assess the extent of and sources of variation in the glycaemic index values of foods measured by different laboratories around the world.

Condition Intervention
Drug: Test Meal: Reference food (glucose or white bread)
Drug: Test Meal: Pirate's Booty
Drug: Test Meal: Ceaprove wafer
Drug: Test Meal: Stretch Island Strawberry Fruit Leather

Study Type: Interventional
Study Design: Allocation: Non-Randomized
Intervention Model: Crossover Assignment
Masking: Open Label
Primary Purpose: Treatment
Official Title: Measuring the Glycaemic Index of Foods: Interlaboratory Study #2

Further study details as provided by Glycaemic Index Testing, Inc.:

Primary Outcome Measures:
  • glycaemic index

Secondary Outcome Measures:
  • within-individual variation of glycaemic responses
  • glycaemic responses assessed as incremental area under the curve

Estimated Enrollment: 280
Study Start Date: November 2005
Estimated Study Completion Date: April 2006
Detailed Description:

The glycaemic index values of 3 different foods provided from a central location will be determined in each of 20-30 centers around the world. A standard protocol will be followed, but this protocol leaves room for variation in certain details, such as whether subjects are allowed to have coffee or tea with the test meals or only water, or the method of analyzing blood glucose. Methodologic details, subject demographic information (height, weight, age, and ethnicity), results of local calculations and raw data will be sent to a central location.


Ages Eligible for Study:   18 Years to 75 Years
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   Yes

Inclusion Criteria:

  • Healthy male or female subjects

Exclusion Criteria:

  • Diabetes
  • Pregnancy or lactation
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT00260858

  Show 28 Study Locations
Sponsors and Collaborators
Glycaemic Index Testing, Inc.
Sydney University Glycaemic Index Research Services
ILSI Europe
Principal Investigator: Thomas MS Wolever, MD, PhD University of Toronto
Principal Investigator: Janette C Brand-Miller, PhD University of Sydney
  More Information

No publications provided by Glycaemic Index Testing, Inc.

Additional publications automatically indexed to this study by Identifier (NCT Number): Identifier: NCT00260858     History of Changes
Other Study ID Numbers: GIL5047
Study First Received: November 30, 2005
Last Updated: June 7, 2006
Health Authority: Canada: Health Canada

Keywords provided by Glycaemic Index Testing, Inc.:
Glycemic index
Glycemic responses
Healthy human subjects processed this record on October 09, 2015