FOR IMMEDIATE RELEASE
Journal of Clinical Microbiology Studies Demonstrate Two Investigational Diagnostics Outperform Current Tests in Detecting Early Lyme Disease
Studies utilize Bay Area Lyme Foundation’s Lyme Disease Biobank samples to point to the promise of single-tier diagnostics to potentially transform early detection
PORTOLA VALLEY, Calif., October 9, 2025 — Bay Area Lyme Foundation, the leading nonprofit funder of Lyme disease research in the US, today announced results from two independent studies published in Journal of Clinical Microbiology, conducted by researchers at Tufts University School of Medicine, and Kephera Diagnostics, respectively, demonstrating the potential of novel investigational single-tier Lyme disease tests to improve accuracy in the earliest stages of infection. Each study uses well-characterized samples from Bay Area Lyme Foundation’s Lyme Disease Biobank and demonstrated unprecedented accuracy, far exceeding the current CDC-recommended Lyme disease two-tier test, which can miss up to 70% of early-stage cases as well as later-stage cases.
“The CDC’s standard two-tier Lyme diagnostic misses the majority of early cases, delaying treatment and increasing the risk of developing persistent, debilitating symptoms for patients. The two novel single-tier assays—while not yet FDA-cleared for clinical use—point to a future where Lyme disease can be diagnosed quickly, accurately, and with a single test,” Liz Horn, PhD, MBI, a coauthor on both studies, and Principal Investigator of Lyme Disease Biobank, a Bay Area Lyme Foundation program that provides much-needed samples to approved researchers working to better understand tick-borne diseases and develop improved diagnostic tests and therapeutics. “These single tier tests, like InBios Lyme Detect™ and Kephera’s Hybrid Lyme ELISA could mark a turning point for Lyme diagnostics, giving physicians and patients more accurate tools that are urgently needed.”
The first study, evaluating the InBios Lyme Detect™ Multiplex ELISA, was conducted by Pete Gwynne, PhD, a 2022 Bay Area Lyme Emerging Leader Award (ELA) winner, and colleagues at Tufts University School of Medicine. Using samples from the Lyme Disease Biobank, this new diagnostic correctly identified all two-tier positive samples evaluated in the study, while also detecting 21 of 79 clinically diagnosed patients who were missed by following the current CDC guidance for testing using FDA-cleared standard two-tier tests (STTT) and had erythema migrans (EM) skin lesions. Importantly, the InBios test maintained >99% specificity, with only one false positive across more than 200 control and lookalike disease samples and was shown to be highly reproducible.







“I want to leave you with hope. I think we’re going to be unstoppable because I think that these are solvable problems. These are answerable questions. I think that there are already a lot of existing tools in immunology that just need to be brought into the fight, and we can change this.”
Any respectable pathogen that can establish a persistent infection needs to figure out your immune system to the point that it can evade it. The fact that it has persisted means that it was able to evade your immune clearance. And so, I got to that from a very interesting direction working on immune regulation, trying to understand these brakes on the immune response and how they impact the response to infection. The immune system has the power to kill you and obviously, nobody has any incentive for that to happen. So, there are a lot of mechanisms in place to put brakes on the immune system and reign it in. One of the huge developments in cancer over the last two decades has been reevaluating the question: can we take those brakes off? So in my postdoc, I was studying a particular checkpoint where this was turning into an exciting immuno-oncology target, and I said, ‘I want to look at how this checkpoint is used in infection.’ I realized that this checkpoint was being used to help you survive an acute infection, but created a vulnerability for pathogens to evade immune clearance and establish chronic infection much like it allows cancer cells to evade immune clearance. In an amazing collaboration with Irv Weissman, Balyn Zaro, and Jenifer Coburn we realized that the bacteria that cause Lyme disease manipulate this brake and that’s how I became fascinated with Lyme. But I also became concerned about turning off this brake in cancer patients because I was concerned about what would happen if you used this on cancer patients during an active infection. Indeed, the 

Charlotte Mao:
Anna Schotthoefer, PhD, a project scientist at Marshfield Clinic Research Institute in Wisconsin, discusses the collection and analysis of a specific subset of blood and urine samples for Lyme Disease Biobank—a Bay Area Lyme Foundation program—from patients diagnosed with tick-borne diseases in the state. Marshfield Clinic serves a large population in Wisconsin and Michigan’s Upper Peninsula, which are highly endemic for Lyme disease. Her Bay Area Lyme-funded