Clinical Pathology Laboratories (CPL) has validated the Diasorin LIAISON® Meridian H. pylori Stool Antigen(HPSA) test to replace the TechLab® H. pylori CHEKTM test.

  • The Diasorin LIAISON® Meridian HPSA test and TechLab® H. pylori CHEKTM test are FDA approved.
    • Diasorin LIAISON® Meridian HPSA is a chemiluminescent immunoassay (CLIA) method.
    • TechLab® H. pylori CHEKTM is an enzyme immunoassay (EIA) method.
  • The Diasorin® and TechLab® methods are analytically equivalent according to CDC and CPL evaluations.
  • CPL has confirmed the Diasorin® method to be highly sensitive and specific.

Specimen Acceptability

The Diasorin LIAISON® Meridian HPSA test specimen requirements are:

  • Fresh Fecal (preferred)
  • Frozen Fecal
  • Fecal specimens preserved in 10% formalin, Merthiolate formalin, sodium acetate formalin, or polyvinyl alcohol
  • Fecal specimens in transport media (Cary Blair or C&S)
Acceptable Not Acceptable

Effective April 24, 2023, CPL will be changing from the TechLab® H. pylori CHEKTM test to Diasorin LIAISON® Meridian HPSA for use in the following tests:

Test Code Name

Please contact your local CPL representative should you have any questions regarding these changes.


LIAISON Meridian H. pylori SA. Package Insert. DiaSorin Inc. EN-53759-2020-09.