Τρίτη 25 Ιουλίου 2017

Performance evaluation of the Verigene® Clostridium difficile nucleic acid test, an automated multiplex molecular testing system for detection of C. difficile toxin

Publication date: Available online 24 July 2017
Source:Journal of Infection and Chemotherapy
Author(s): Kosuke Kosai, Yuki Iwanaga, Norihiko Akamatsu, Yuya Okada, Norihito Kaku, Naoki Uno, Yoshitomo Morinaga, Hiroo Hasegawa, Taiga Miyazaki, Koichi Izumikawa, Hiroshi Mukae, Katsunori Yanagihara
The Verigene®Clostridium difficile nucleic acid test (Verigene® CDF test) is an automatic and rapid detection system for the genes encoding tcdA, tcdB, binary toxin, and the single nucleotide deletion at base pair 117 in the tcdC based on microarray and PCR amplification. We compared the performance of the Verigene® CDF test to that of two enzyme immunoassays, C. DIFF QUIK CHEK COMPLETE and X/Pect Toxin A/B, using 118 specimens. We found overall concordance rates of 81.4% and 78.8% between C. DIFF QUIK CHEK COMPLETE and Verigene® CDF test, and X/Pect Toxin A/B and Verigene® CDF test. The Verigene® CDF test showed the highest sensitivity (93.9%) and had a specificity of 96.5%. The sensitivity and specificity were respectively 45.5 and 94.1% for C. DIFF QUIK CHEK COMPLETE and 27.3 and 100.0% for X/Pect Toxin A/B. These results indicated that the Verigene® CDF test was highly accurate for the detection of C. difficile toxin in fecal specimens and supported its use in daily diagnostic practice.



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