Borrelia – p/ciała w klasie IgM – test potwierdzenia met. Western blot: P 100 – B. afzelli; VlsE – B. afzelli; P 58 – B. garinii; P 41 (Flagelina) – B. burgdorferi sensu stricto; P 39 (BmpA) – mix (B. burgdorferi sensu stricto, B. garinii, B. afzelli); OspA (p31) – B. afzelli; OspC (p23) – mix (B. burgdorferi sensu stricto, B. garinii, B. bavariensis, B. afzelli, B. spielmanii); P 18 (DbpA) – mix ( B. burgdorferi sensu stricto, B. garinii, B. afzelli, B. spielmanii, B. bavariensis)