[Evaluation of four immunoenzymatic tests for detecting Clostridium difficile toxins A and B].
Four immunoenzymatic tests for detecting Clostridium difficile toxins A and B were studied: two rapid tests (Tox A/B QUIK CHEK-Techlab and NoviView Toxine-A-Hiss diagnostics) and two Elisa tests (C. difficile TOX A/B II -Techlab and Toxin A+B Elisa Test, Novitec-Hiss diagnostics). The results were compared to those obtained with ImmunoCard Tox A+B -ICTAB (Meridian), C. difficile Toxine A (Oxoid) for rapid test and Elisa Premier A+B Meridian for Elisa. A total of 41 stools and 16 isolates were studied with rapid tests. On stools, the sensitivity and specificity of QUIK CHEK test was 94.1% and 100% respectively compared to the test ICTAB. On the isolates, sensitivity and specificity was 100%. With the Noviview test, the sensitivity on stools and isolates was respectively 88.2 and 85.7% and the specificity was 100% compared to Oxoid. A total of 38 stools were studied with Elisa tests. With Techlab test compared to the test Premier, sensitivity and specificity was 100%. The Novitec test gave five false negative reactions with consequently a sensitivity of 70.6%.
Poilane
I
I
Laboratoire de microbiologie, hôpital Jean-Verdier, Assistance publique-Hôpitaux de Paris, avenue du 14-Juillet, 93143 Bondy cedex, France. isabelle.poilane@jvr.aphp.fr
Humeniuk-Ainouz
C
C
Benboujida
K
K
Kharbach
A
A
Cruaud
P
P
Collignon
A
A
D001426:Bacterial Proteins / Q000032:analysis*; D001427:Bacterial Toxins / Q000032:analysis*; D004761:Enterocolitis, Pseudomembranous / Q000175:diagnosis*; D004768:Enterotoxins / Q000032:analysis*; D005243:Feces / Q000382:microbiology; D006801:Humans; D007124:Immunoenzyme Techniques; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity
D001426:Bacterial Proteins; D001427:Bacterial Toxins; D004768:Enterotoxins; C041348:tcdA protein, Clostridium difficile; C031815:toxB protein, Clostridium difficile