Evaluation of a new commercial immunoassay for rapid detection of Campylobacter jejuni in stool samples

In order to evaluate a new commercial enzyme immunoassay (ProspecT Campylob acter Microplate Assay; Alexon-Trend, USA) for the detection of Campylobact er jejuni and Campylobacter coli in stool samples, 30 faecal specimens know n to be culture-positive for Campylobacter jejuni were tested with the new assay. The detection limit was approximately 3x10(6)/ml in faecal suspensio ns. The sensitivity relative to culture was 80% (24/30). All of the 24 posi tive samples, except for one, remained positive after being stored at -20 d egreesC for 60 days. The specificity of the test was 100%. Interestingly, 6 of 11 additional Campylobacter jejuni culture-positive samples that had be en obtained from patients with Guillain-Barre syndrome and stored at -20 de greesC for periods of up to 5 years tested positive in the assay. The perfo rmance of the assay indicates that it has potential value for use in future early intervention studies.