title: [Influence of specimen processing method on Mycobacterium tuberculosis detection by PCR-reversed dot hybridization].
abstract: OBJECTIVE
  To evaluate specimen processing with sodium dodecyl (lauryl) sulfate (SDS) on the detection of Mycobacterium tuberculosis by PCR-reversed dot hybridization.
  
  
  METHODS
  Totally 266 specimens were collected from sputum, pleural fluid, ascites, urine or blood of patients with active tuberculosis and were treated with SDS or routine method. All specimens handled were tested for detecting M. tuberculosis by PCR-reversed dot hybridization.
  
  
  RESULTS
  The detection rate of M. tuberculosis from specimens prepared by SDS method was 65.0% (173/266) as compared with 51.5% (136/168) by routine method. Results from two methods were considered statistically significant (chi(2) = 35.03, P < 0.001).
  
  
  CONCLUSIONS
  The SDS processing method may be used to detect M. tuberculosis from clinical specimens by PCR and enhances the detection rate of M. tuberculosis.
authors.affiliation: The Affiliated Hospital, Zunyi Medical College, Zunyi 563003, China.
authors.forename: L
authors.initials: L
authors.lastname: Peng
authors.forename: Y
authors.initials: Y
authors.lastname: Xiao
authors.forename: H
authors.initials: H
authors.lastname: Jiang
mesh_terms: D003902:Detergents; D006801:Humans; D009169:Mycobacterium tuberculosis / Q000235:genetics / Q000302:isolation & purification*; D014395:Peritonitis, Tuberculous / Q000382:microbiology / Q000473:pathology; D016133:Polymerase Chain Reaction / Q000379:methods*; D012967:Sodium Dodecyl Sulfate; D014376:Tuberculosis / Q000382:microbiology* / Q000473:pathology; D014390:Tuberculosis, Meningeal / Q000382:microbiology / Q000473:pathology; D014396:Tuberculosis, Pleural / Q000382:microbiology / Q000473:pathology; D014397:Tuberculosis, Pulmonary / Q000382:microbiology / Q000473:pathology; D014398:Tuberculosis, Renal / Q000382:microbiology / Q000473:pathology
chemical_list: D003902:Detergents; D012967:Sodium Dodecyl Sulfate