Innovative DNA Technology Promises Faster Diagnosis for Severe Bloodstream Infections

A new DNA-based diagnostic method developed by researchers at Örebro University, led by David Nestor, could drastically reduce the time needed to diagnose bacterial infections in the bloodstream from days to mere hours. Currently, the established process relies on culturing blood samples, which can take between 12 hours and three days—delays that can pose significant risks, especially for elderly patients and those with severe infections.

The cutting-edge technique involves the direct analysis of bacterial DNA from approximately 5 milliliters of blood. This approach was tested using samples from around 500 patients with suspected bloodstream infections in the Örebro region between 2014 and 2016, representing a collaborative effort among multiple research institutions.

According to Nestor, although the technology shows considerable promise and potential to improve diagnostic speed and accuracy—particularly in cases where traditional cultures fail—it remains experimental and requires further refinement to ensure the method's sensitivity and reliability. He also noted that as DNA sequencing technologies become more accessible and cost-effective, integrating this method into routine clinical diagnostics could substantially benefit patients by enabling rapid pathogen identification and timely treatment.

Such advancements are critical in healthcare settings where early diagnosis can significantly influence treatment outcomes and reduce mortality risks connected to sepsis and bloodstream infections. While traditional diagnostics remain the standard today, this innovative DNA-focused method opens a path toward improving the speed and effectiveness of bacterial infection detection in Sweden's healthcare system.