Lactoin

¹³C-lactose blood test for lactose intolerance


Indications for the Lactoin test

About 10 to 15 percent of the population in Germany, up to 60 percent in Southern Europe, and about half of the global population suffer from chronic lactose intolerance. This is attributed to insufficient production of the enzyme lactase. As undetected lactose intolerance may give rise to gastric colic and diarrhea, this test is also useful for babies. While the primary congenital form of lactase deficiency is comparatively rare, most cases involve secondary lactose deficiency, which is commonly associated with other diseases, such as coeliac disease or Crohn's disease. The acquired variety, for instance following virus infections, is also gaining importance.

 

Principle for Lactoin 

The test is evaluated by elemental analysis or gas chromatography, followed by mass spectroscopy. Unmetabolized lactose with a reduced content of ¹³C-lactose is measured in the blood, and possibly in the stool. This product is patented in the US and EU, and approval is in preparation.

Lactoin Patents

  • EP1320757, Method for Diagnosing Lactose Intolerance and Diagnosis Kit For Carrying Out The Method, European Patent, 30.11.2005
  • US7037487, Method for diagnosing lactose intolerance and diagnostic kit for performing the method, US Patent, 02.05.2006
  • WO2002027325, Method for Diagnosing Lactose Intolerance and Diagnosis Kit For Carrying Out The Method, International Patent, 04.04.2002
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