Assessment & Analysis Services




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Our clients include research groups in almost every major university in the U.S., as well as Federal and State government agencies, and other national and international industry groups and health professionals.

See our Client List.

Assessment Tools and Analysis Services

NutritionQuest is a leader in the field of diet and physical activity assessment. We are the official source of the Block Food Frequency Questionnaire and other dietary and physical activity questionnaires developed under the guidance of Dr. Gladys Block. Block Assessment Tools are designed and tested for usability, and have a long history of validation in a variety of demographic subpopulations. Our questionnaires have been used in hundreds of research studies.

All Block Questionnaires and Screeners for assessment of diet and physical activity are available for administration in two different formats:

More Information About Assessment Tools

For more information about common dietary assessment methods, go to Assessment Methods. For additional information about the development and validation of Block questionnaires and screeners, go to Validation. To access charts showing means and percentile distribution of energy (kcal) intake for adults in the U.S. population, for Whites, Blacks, and Mexican-Americans, and for men and women, go to Caloric Intake Charts.

Pricing and Ordering Information

For samples of scannable paper-and-pencil questionnaires or to arrange a free online demonstration of the Data-on-Demand System using a Block questionnaire or screener Contact Us. For more about pricing, go to Pricing and Ordering. Price quotes and comparisons are available upon request.

Tailored Tools and Population Data Analysis

We work with researchers to develop questionnaires and screeners tailored to their population or research question. We conduct analyses of the National Health and Nutrition Examination Survey (NHANES) data to assist in answering specific research questions and as the basis for development of tailored tools.


Trust in NutritionQuest for the most relevant and current research tools.

Since our founding in 1993, we have continued to redesign and update our questionnaires, nutrient databases and analyses as new dietary and physical activity data have become available. Learn more about Our Company.