Why Your Lyme Test Keeps Coming Back Negative (And You’re Still Sick)

Dr. Kelley explains why she calls Lyme “an umbrella term” that covers a whole family of tick-borne infections, not just one bacterium, and why mold, parasites, and other overlapping issues so often complicate the picture. You’ll hear her walk through why negative test results don’t rule anything out, how she uses clinical judgment alongside imperfect labs, and what a promising new IV-based treatment is doing for patients who’ve tried everything else.

Why Lyme Tests Get It Wrong

Standard Lyme tests like the ELISA and Western blot were designed in the 1990s and only look for antibodies to one specific bacterium, Borrelia burgdorferi, missing the many other Borrelia species and co-infections like Bartonella, Babesia, and Ehrlichia that often travel together. Because these tests measure the body’s antibody response rather than the infection itself, a negative result doesn’t mean the infection isn’t there. It often just means the test was not sensitive enough to catch it. Dr. Kelley emphasizes that Lyme is a clinical diagnosis first, meaning a doctor’s judgment and a patient’s full history and symptom picture matter more than a single lab result.

Mold, Parasites, and the “Smorgasbord” of Chronic Illness

Patients with tick-borne illness rarely have just one issue. Dr. Kelley describes how mold acts like “gasoline” on top of vector-borne infections, intensifying symptoms and making it harder to pinpoint a single root cause. Add in parasites, which she believes are more common than most people assume despite frequently testing negative on standard stool studies, and the result is a complex, overlapping web of triggers. Rather than chasing one diagnosis, she focuses on finding the biggest lever for each patient, whether that’s gut health, detox support, or addressing a specific infection first.

A Promising New Treatment for Stubborn Infections

For patients who haven’t responded to antibiotics, herbs, or IV therapies, Dr. Kelley has seen encouraging results with Supportive Oligonucleotide Therapy (SOT), a genetically targeted IV infusion that is custom-made for a patient’s specific pathogen and designed to stop it from replicating. It’s not FDA-approved, precisely because it’s built individually rather than mass-produced, but she’s found it especially helpful for patients who struggle with the side effects of more traditional treatments, with recovery timelines typically ranging from three months to a year or more depending on how long the infection went untreated.

Listen to this episode and start finding your real root cause today!

Guest Bio

Dr. Casey Kelley is the founder and Medical Director of Case Integrative Health, an integrative and functional medicine clinic in Chicago, IL. Dr. Kelley specializes in treating complex chronic illnesses including Lyme disease and other tick-borne infections. She is known for her investigative, root-cause approach, blending conventional and integrative therapies to address conditions often overlooked or misdiagnosed.

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