Oral contrast agents for CT: a taste test survey
Related Experiment Video
Updated: Oct 31, 2026

Taste Exam: A Brief and Validated Test
Published on: August 17, 2018
1Department of Radiology, McGuire Veterans Affairs Medical Center, Richmond, VA 23249, USA.
Purpose:
Our goal was to evaluate the palatability of the currently available oral contrast agents for CT.
Method:
We surveyed 202 adults (92 women and 110 men) with a mean age of 59 years. Each participant sampled five or eight products. The participants ingested 1 oz. of each product and recorded an overall score, taking into account the factors of palatability that were important to them. Scores were marked on a visual analog rating scale with 0 representing "dislike a lot" and 10 representing "like a lot."
Results:
The following mean palatability scores were obtained: Gastrografin mixed with Tropical Punch Kool-Aid 8.2; Scan C 5.7; Cheetah 4.7; Readi-Cat 4.4; E-Z-Cat 4.0; Tomo-Cat 3.6, Prep-Cat 3.5; Baro-Cat 3.2; Lipomul mixed with water 3.1.
Conclusion:
Statistical cluster analysis suggested the following groupings of the products (i.e., products with statistically similar scores grouped together): Cluster 1-Kool-Aid with Gastrografin; Cluster 2-Scan C, Cheetah, Readi-Cat: Cluster 3-E-Z-Cat, Tomo-Cat, Prep-Cat, Baro-Cat, Lipomul.
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