Researchers at Korea University developed a diagnostic platform that can detect HIV infection using a single drop of saliva [1].
This advancement targets the critical early stage of infection known as the ‘super-spreader’ window [2]. During this period, antibody levels are often too low for conventional rapid tests to identify, which can lead to undetected transmissions.
The project was led by Prof. Lee Jung‑hoon at Korea University’s KU‑KIST Fusion Graduate School [1]. The team utilized a combination of nanotechnology-based antibody capture and AI-driven signal amplification to increase sensitivity [1, 2].
The research team said the platform achieves a signal amplification of the captured HIV antibody of approximately 20-fold [2]. This high level of sensitivity allows the system to identify the virus in non-invasive samples, such as saliva, rather than relying solely on blood draws.
The platform was reported on May 7, 2026 [1]. By integrating AI to enhance the signal, the researchers said they aimed to bridge the gap in early detection where traditional testing methods typically fail [2, 3].
“detect HIV infection from a single drop of saliva”
The ability to detect HIV via saliva during the early window of infection could significantly reduce the rate of new transmissions. By lowering the threshold for detection and removing the need for invasive blood tests, this platform may increase screening frequency and allow patients to access antiretroviral therapy sooner, effectively neutralizing their ability to spread the virus to others.
