What is two-tier Lyme disease testing?
Two-tier testing uses an initial antibody assay followed, when indicated, by a second confirmatory immunoblot or another assay under the applicable laboratory algorithm.
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Short answer
At a glance
Key takeaways
Direct answer
Two-tier testing uses an initial antibody assay followed, when indicated, by a second confirmatory immunoblot or another assay under the applicable laboratory algorithm.
Why context matters
Test choice and interpretation depend on timing, symptoms, geography and validated laboratory pathways. A result should never be separated from its clinical context.
What to do next
This material is educational and cannot diagnose, exclude or treat illness. Use NHS 111, a GP, emergency services or the corresponding local service according to symptom severity.
Sources and further reading
UK Lyme disease guidance and data
For current UK clinical advice, public-health guidance and surveillance data, consult these primary national sources.