The Evolution of STI Testing: A Catalyst for Modern Diagnostic Technologies
From Laboratory to Living Room: Who’s Leading in STI Testing Across Laboratory-Based, Point-of-Care, At-Home and Self-Collection Diagnostics? S TI and STD testing are evolving rapidly, driven by advances in technology, digital health and shifting patient expectations.
effectiveness, scalability and ease of deployment across diverse testing environments. However, the market has shifted. Molecular diagnostics have now overtaken immunoassays, capturing ~51% of revenue in 2025 2 as demand grows for higher analytical sensitivity and specificity—particularly for detecting asymptomatic infections. Molecular assays can be more complex to implement outside controlled laboratory settings, but ongoing innovation is rapidly expanding their use across decentralized workflows. Both molecular and immunoassay platforms underpin all four major testing modalities (laboratory-based, point-of-care, at-home and self-collection), each addressing unique barriers to screening, such as reducing turnaround time, improving access or enhancing privacy. Central laboratories remain the foundation for high-throughput testing, while POC platforms enable same-day visit results and treatment. The growth of at-home and mail-in testing has further expanded access for individuals deterred by stigma, cost or geographic isolation. Together, these approaches are creating a more patient-centered diagnostic ecosystem. For assay developers, understanding the strengths and trade-offs of each format is essential to designing next-generation STI testing solutions that balance accuracy, accessibility and ease of use.
Today, options range from laboratory-based assays and clinic-based point-of-care (POC) systems to at-home rapid tests and mail-in self-collection kits that combine convenience with clinical accuracy. Immunoassay technologies continue to play a central role in STI diagnostics, accounting for ~44% of the market in 2024 1 thanks to their cost-
12 | GENengnews.com
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