In this episode of The ICHE Podcast, we take a deep dive into the evolving role of plasma cell-free DNA (cfDNA) metagenomic next-generation sequencing (mNGS) in the diagnosis of infectious diseases. Hosted by experts from UCLA Health, this discussion breaks down what cfDNA mNGS is, how it differs from more traditional pathogen detection tools like PCR, and where it fits in the diagnostic landscape.

Dr. Ishminder Kaur, Dr. Daniel Uslan, and Dr. Shangxin Yang join the episode to explore the clinical utility, benefits, and pitfalls of this rapidly emerging diagnostic modality. The group reviews several individual studies, highlighting how they approached their research questions, key findings, and the implications for patient care and antimicrobial stewardship. The conversation also addresses challenges such as interpreting complex results, cost considerations, and potential overuse.

Whether you’re a clinician, laboratorian, or infection preventionist, this episode provides critical insights into when and how cfDNA mNGS may enhance your diagnostic toolkit—and when it might not.

Each guest closes with a practical takeaway: concrete advice for healthcare professionals who are considering incorporating cfDNA testing into their own clinical or infection control practice.