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Comparative Study
. 1992 Aug;45(8):709-12.
doi: 10.1136/jcp.45.8.709.

Diagnostic tests for Helicobacter pylori: comparison and influence of non-steroidal anti-inflammatory drugs

A S Taha  1 , P Boothman, I Nakshabendi, J Reid, C Morran, C G Gemmell, F D Lee, R D Sturrock, R I Russell
Affiliations
Comparative Study

Diagnostic tests for Helicobacter pylori: comparison and influence of non-steroidal anti-inflammatory drugs

A S Taha et al. J Clin Pathol. 1992 Aug.

Abstract

Aims: To evaluate the efficacy of culture, histology, CLO-test, Helico-G and Pyloriset tests in diagnosing Helicobacter pylori in the presence or absence of non-steroidal anti-inflammatory drugs (NSAIDs).

Methods: Of 134 patients studied, 75 had taken NSAIDs. At endoscopy, biopsy specimens were taken for culture, histology, and CLO-test. Blood was also taken for enzyme linked immunosorbent assay (ELISA) (Helico-G) and latex agglutination (Pyloriset) tests.

Results: The sensitivity, specificity, and predictive values of histology and CLO-test, compared with culture, ranged from 90% to 97%, regardless of NSAID intake. In the 59 patients not taking NSAIDs Helico-G had a sensitivity of 75% (p < 0.05) and a specificity of 61%; Pyloriset's sensitivity and specificity were, respectively, 63% (p < 0.05) and 67%. In the 75 patients taking NSAIDs the sensitivity of Helico-G was 81% and its specificity 45% (p < 0.05); Pyloriset had a sensitivity of 61% (p < 0.05) and a specificity of 50% (p < 0.05).

Conclusion: These findings suggest that H pylori is more reliably diagnosed by culture, histology, and CLO-test than by the serological tests used in this study, especially in patients treated with NSAIDs.

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