Informative array testing with multiplex assays

Area of Science:

• Clinical diagnostics
• Computational biology
• Epidemiology

Background:

• High-volume testing for sexually transmitted diseases (STDs) relies on group testing to minimize costs.
• Array testing is an efficient group testing algorithm, but further optimization is needed.
• Multiplex assays and risk information present opportunities to enhance group testing efficiency.

Purpose of the Study:

• To develop novel specimen arrangements for array testing to reduce retests.
• To establish methods for calculating operating characteristics of group testing algorithms.
• To identify optimal array configurations for improved diagnostic efficiency.

Main Methods:

• Proposed specific specimen arrangements within an array testing framework.
• Developed methods to calculate expected number of tests and standard deviation.
• Illustrated methods using chlamydia and gonorrhea detection with Aptima Combo 2 Assay.
• Provided R functions for practical laboratory application.

Main Results:

• Demonstrated that proposed array arrangements can reduce the number of retests compared to existing algorithms.
• Quantified the operating characteristics for the novel arrangements.
• Successfully applied the methodology to a real-world STD testing scenario.

Conclusions:

• Novel array testing arrangements offer enhanced efficiency for high-volume STD screening.
• The developed methods and tools facilitate the optimization of group testing strategies.
• This research can lead to more cost-effective and accurate STD diagnostics.