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- W2132316448 abstract "ABSTRACTTuberculosis has remained to be a major public health problem in Nepal. The risk of spread of infection andemergence of drug-resistant strain has created the need for a rapid, sensitive and specific diagnostic test.In addition, clinically suspicious cases that do not give positive result in conventional laboratory test needmore sensitive test for diagnosis.In order to evaluate the possibility of incorporation of Polymerase Chain Reaction (PCR) in the diagnosis oftuberculosis, we performed a comparative study of PCR to detect Mycobacterium tuberculosis in sputumspecimens, against Ziehl-Neelsen (Z-N) stain and culture as a standard method.A total of 103 specimens were subjected to Z-N staining, culture and PCR for detecting Mycobacteriumtuberculosis. Of these, 19 were positive by Z-N stain, 26 by PCR and 25 by culture. Four stain negativespecimens showed positive result in both culture and PCR. Two specimens of stain and culture positive werePCR negative. Five specimens showed positive result only with PCR. Two culture positive specimens gavenegative results by both Z-N stain and PCR. Sensitivity, specificity, positive predictive value and negativepredictive value of PCR which were 84%, 93.5%, 80.8% and 94.9% respectively.This study showed that there is no need for PCR test for the smear positive cases. However, PCR could be apossible diagnostic tool for the confirmation of the smear negative cases that show clinical symptoms of TB.Key Words: Mycobacterium tuberculosis, Z-N stain, PCR, sensitivity, specificity." @default.
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- W2132316448 date "2003-03-01" @default.
- W2132316448 modified "2023-09-27" @default.
- W2132316448 title "POLYMERASE CHAIN REACTION DETECTION OF MYCOBACTERIUM TUBERCULOSIS FROM SPUTUM" @default.
- W2132316448 cites W1984727643 @default.
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- W2132316448 doi "https://doi.org/10.31729/jnma.795" @default.
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