Advantage of using a home-made ELISA kit for detection of Helicobacter pylori infection over commercially imported kits

Indian J Med Microbiol. Apr-Jun 2008;26(2):127-31. doi: 10.4103/0255-0857.40525.

Abstract

Purpose: To evaluate a home-made ELISA kit for detection of Helicobacter pylori (Hp) infection and comparison of its immunologic criteria with those of foreign commercial kits.

Methods: A home-made IgG ELISA kit was developed using soluble antigenic fractions of Hp proteins. Confirmed sera were tested and serological criteria were evaluated through assessment of 199 serum samples.

Results: The accuracy, sensitivity and specificity values of home-made kit were 92, 92 and 90.4%, respectively. These immunologic criteria for Trinity kit were 95.2, 95.2 and 95% in comparison with IBL kit (91.3, 92.2 and 88.5%), BIOHIT kit (72.4, 41.6 and 94.1%) and HelicoBlot2.1 (94.2, 93.4 and 100%). Kappa agreement assessment demonstrated that two of the imported ELISA kits had fair to moderate agreement with the home-made kit while the other one had a poor agreement value.

Conclusions: Apart from comparable values between the home-made kit and the most efficient imported kit (Trinity) there was significant cost benefit. Therefore, we recommend the home-made kit as a suitable substitution for detection of Hp infection in the Iranian population.

Publication types

  • Comparative Study
  • Evaluation Study
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adolescent
  • Adult
  • Aged
  • Aged, 80 and over
  • Antigens, Bacterial / blood*
  • Enzyme-Linked Immunosorbent Assay / economics
  • Enzyme-Linked Immunosorbent Assay / methods*
  • Female
  • Helicobacter Infections / diagnosis*
  • Helicobacter pylori / isolation & purification*
  • Humans
  • Male
  • Middle Aged
  • Sensitivity and Specificity

Substances

  • Antigens, Bacterial