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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   (Adult, Senior)
Sexes Eligible for Study:   All
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

  Hide Study Locations
United States, Florida
Abernethy Research
Gainsville, Florida, United States, 32601
United States, New York
University of Buffalo
Buffalo, New York, United States, 14214-3000
United States, Ohio
Ohio State University
Columbus, Ohio, United States, 43210-1295
Australia, New South Wales
University of Sydney
Sydney, New South Wales, Australia
Australia, Victoria
International Diabetes Institute
Melbourne, Victoria, Australia, 3162
Canada, Ontario
Glycemic Index Laboratories, Inc.
Toronto, Ontario, Canada, M5C 2X3
China, Beijing
Institute of Nutrition and Food Safety, Chinese Centre for Disease Control and Prevention
Beijing, Beijing, China, 100050
The Royal Veterinary & Agricultural University
Copenhagen, Denmark
National Public Health Institute
Helsinki, Finland, FIN-00300
Foodfiles Oy
Kuopio, Finland, FI-70210
Nantes, France, 44200
German Institute of Human Nutrition
Potsdam-Rehbrucke, Nuthetal, Germany, D-14558
University of Milan
Milan, Italy, 20133
University of Parma
Parma, Italy, 43100
University Sains Malaysia
Kota Bharu, Kelantan, Malaysia
Nutriscience, BV
Maastricht, Netherlands, 6200
New Zealand
University of Otago
Dunedin, Otago, New Zealand
University of the Philippines
Diliman, Philippines
South Africa
GI Foundation of South Africa
Nelspruit, Mpumalanga, South Africa, 1200
Potchefstroom University
Potchefstroom, Potchesfstroom, South Africa, 2520
Gotheburg University
Gothenburg, Gotheburg, Sweden, 413 90
Lund University
Lund, Sweden, 222 41
Trinidad and Tobago
University of the West Indies
Champs Fleurs, Trinidad, Trinidad and Tobago
United Kingdom
Reading Scientific Services, Ltd.
Reading, Berkshire, United Kingdom
Oxford Brookes University
Oxford, Oxfordshire, United Kingdom, OX3 0BP
University of Surrey
Guildford, Surrey, United Kingdom, GU5 7XH
Leatherhead Food International
Leatherhead, Surrey, United Kingdom, KT22 7RY
Hammersmith Hospital
London, United Kingdom, W12 0HS
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