Diagnosis & Tests
Guide through Lab Medicine
Diagnosing Lyme disease is complex. Standard tests do not always provide clear results. Here you learn about methods and their limitations.
Note: We are a patient organization, not doctors. This information is based on experience and does not replace medical advice.
Step by Step to the Right Diagnosis
How a Lyme disease diagnosis should ideally proceed — and why many patients give up too early.
Clinical History & Symptom Assessment
The first step is always a thorough conversation about symptoms, tick bites, travel history, and the timeline of complaints. Many patients are reduced to lab values too early.
VBCI note: An experienced clinician evaluates the entire history — not just blood counts.
Standard Blood Tests (ELISA & Western Blot)
The ELISA test is used as a screening test, with positive results confirmed by Western blot. This 'two-step diagnosis' is standard — but has significant limitations.
Important: A negative ELISA does NOT rule out Lyme disease. False-negatives are common — especially in early stages.
Extended Specialty Diagnostics
For persistent symptoms despite negative standard tests, additional methods apply: Lymphocyte Transformation Test (LTT), CD57 NK cells, seronegative antibodies, or PCR tests from specialty labs.
These tests are not available in every general practice — VBCI helps find appropriate specialty labs.
Clinical Overall Assessment & Treatment Decision
Diagnosis is not a pure laboratory decision but a clinical overall assessment. Symptom combinations, progression and response to initial therapy trials are included. An individual treatment plan is developed jointly with the doctor.
Chronic Lyme disease often requires an experienced specialist. VBCI supports finding the right doctor.
Standard vs. Extended Diagnostics
Not every test is suitable for every patient. Here are the key differences.
Standard ELISA Test
Initial screening through conventional healthcare systems
The first step is usually a screening test (ELISA). If positive, a confirmation (Western Blot) follows.
- • Widely available in standard laboratories
- • Covered by health insurance
- • Rapid results within 24-48 hours
- • High false-negative rate (up to 50-60%)
- • Detects antibodies only, not the pathogen itself
- • Unreliable in early stages of the disease
The problem: These tests look for antibodies, not the bacteria itself. In early stages or with weakened immune systems, patients often do not form measurable antibodies ('Seronegativity'). A negative result does not reliably rule out Lyme disease.
Extended Diagnostics
Cellular Tests & Co.
Many specialized doctors use advanced methods like the Lymphocyte Transformation Test (LTT).
LTT (Lymphocyte Transformation Test)
LTT: This test measures not antibodies but the T-lymphocyte reaction to Borrelia. It can indicate *active* inflammation even if antibodies are missing. This test is usually not covered by public insurance.
CD57 Count
CD57 Test: A marker for immune system activity, often suppressed in chronic Lyme disease.
Clinical diagnosis is paramount. Laboratory tests can be false-negative and should always be considered in the context of symptoms.
Clinical Diagnosis
Experienced Lyme specialists treat people, not lab values. If the clinical picture (symptoms, history) strongly suggests Lyme disease, therapy can be justified even without positive lab proof.
View therapy optionsThese Signs Indicate the Need for a Specialist
If you meet any of these criteria, actively seek a Lyme-experienced physician.
Persistent symptoms despite a negative laboratory test
Negative tests but clear history of tick bite
Persistent fatigue, joint pain or neurological symptoms
Symptoms change and worsen
Previous antibiotic treatment did not bring improvement
Suspected co-infections (Babesia, Bartonella, etc.)
You don’t have to face your questions alone.
Chronic infections require in-depth knowledge and individual solutions. Our experts guide you toward the right diagnosis.
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