2nd order laboratory parameters – depending on the results of the medical history, physical examination, etc.
- Lactose tolerance test: defined blood glucose rise after administration of lactose – measurements after 0, 30, 60, 90 and 120 min.
- Lactose in urine – if connatal lactose intolerance is suspected.
- Lactose tolerance test (LCT gene test) – genetic test (DNA analysis) for hereditary lactose intolerance (dimorphism in the promoter of the lactase gene (LCT) on chromosome 2q21 (molecular genetic testing).
- Lactose intolerance polymorphism (MCM6 gene) [molecular genetic testing; PCR] – in suspected hereditary adult lactose intolerance.
- Elastase in stool, lipase – in suspected chronic pancreatitis (inflammation of the pancreas).
- Calprotectin – in suspected chronic inflammatory bowel disease.
- Stool tests – for suspected infections.
- Prick test – in case of suspected food allergy (pollen-associated NMA).
- Specific Ig-E serum – for suspected food allergy (cross-reactive NM: spices, celery, house dust).
- Endomysium antibody (EMA) and transglutaminase antibody (tTG9/ Endomysium IgA and transglutaminase IgA – for suspected celiac disease (gluten-sensitive or gluten-induced enteropathy; gluten intolerance).
