Related Experiment Video
Updated: May 15, 2026
07:10
Application of Biochip Microfluidic Technology to Detect Serum Allergen-specific Immunoglobulin E (sIgE)
Published on: April 21, 2019
A personalized food allergen testing platform on a cellphone
Ahmet F Coskun1, Justin Wong, Delaram Khodadadi
1Electrical Engineering Department, University of California, Los Angeles, CA 90095, USA.
Lab on a Chip
|December 21, 2012
Summary
A new cellphone attachment, iTube, offers sensitive and specific food allergen detection using colorimetric assays. This cost-effective tool analyzes food samples in minutes, enabling personalized testing and public health mapping.
Area of Science:
- Food Science
- Analytical Chemistry
- Biotechnology
Background:
- Accurate food allergen detection is crucial for public health and consumer safety.
- Existing methods can be costly, time-consuming, or require specialized laboratory equipment.
- There is a need for portable, rapid, and cost-effective food allergen testing solutions.
Purpose of the Study:
- To develop and evaluate a novel cellphone-based platform, iTube, for personalized food allergen testing.
- To demonstrate the platform's capability for sensitive and specific detection and quantification of allergens in food.
- To assess the potential of iTube for public health applications through data mapping.
Main Methods:
- Developed iTube, a compact cellphone attachment integrating a camera, LEDs, and a mechanism for test tubes.
- Utilized colorimetric assays activated within test tubes for allergen detection.
- Employed a cellphone application for automated image analysis and quantification of allergen levels within seconds.
- Validated the platform using peanut detection in commercially available cookies.
Main Results:
- The iTube platform demonstrated sensitive and specific detection of food allergens.
- Accurate quantification of peanut contamination in cookies was achieved within approximately 20 minutes per test.
- The system is cost-effective, compact, and operates using a standard cellphone.
- Image analysis and quantification were completed within 1 second.
Conclusions:
- The cellphone-based iTube platform provides an automated, cost-effective, and personalized solution for food allergen testing.
- iTube facilitates rapid detection and quantification of allergens directly on a cellphone.
- The platform's ability to upload results supports the creation of spatio-temporal allergen maps for public health surveillance.
