MIT's PlasmoSniff breath test could diagnose pneumonia in 10 minutes
Inhale nanoparticles, exhale a diagnosis—no lab needed.
MIT researchers led by Professor Sangeeta Bhatia and Assistant Professor Loza Tadesse have developed PlasmoSniff, a portable sensor that diagnoses pneumonia through a simple breath test. The system works by having patients inhale specially designed nanoparticles that circulate through the lungs. If an infection is present, enzymes produced by the body snip off synthetic biomarkers from the nanoparticles, which are then exhaled. A chip-scale sensor using enhanced Raman spectroscopy—an optical technique that illuminates molecules with light—detects these biomarkers at extremely low concentrations.
The team previously demonstrated the concept in mice but needed lab-grade instruments. Now, with the new sensor, they aim to build a handheld device for clinical or home use. According to MIT postdoc Aditya Garg, results could be available within 10 minutes. Beyond pneumonia, PlasmoSniff could also detect industrial chemicals or airborne pollutants, making it a versatile diagnostic tool. The work was published in a recent paper.
- PlasmoSniff uses inhaled nanoparticles that release biomarkers only in presence of disease-specific enzymes
- Enhanced Raman spectroscopy detects exhaled biomarkers at extremely low concentrations
- Handheld device aims to deliver pneumonia diagnosis in about 10 minutes, no lab equipment needed
Why It Matters
A rapid, noninvasive breath test could transform pneumonia diagnosis, enabling earlier treatment and reducing reliance on lab tests.