The Fassisi CryGiDia is an immunochromatographic rapid test that detects antigens of the pathogens Giardia duodenalis and Cryptosporidium parvum in faeces of dogs and cats.

Giardia are detected by the surface antigens of Giardia cysts and trophozoites. The pathogen belongs to the species of small intestine parasites and is one of the most widespread intestinal parasites worldwide (about 10% of all dogs and cats carry Giardia). The pathogen attacks the gastrointestinal tract of the diseased animal and can lead undetected to a one-week to several-month course of the disease. Giardiosis is often latent and difficult to identify. Humans can also become infected with giardia.

Cryptosporidium parvum is an oval small intestinal parasite that causes diarrhoea. The pathogen causes cryptosporidiosis, which can also affect humans. Infected animals, as it happens with Giardia, continuously excrete the corresponding pathogen through the faeces, which causes, that the pathogen spreads and infects other animals.

Both Giardia and Cryptosporidia often lead to slimy, mushy diarrhoea and vomiting, and the symptoms of both diseases are often similar.

The Fassisi CryGiDia Test is particularly useful for the detection of mixed infections or if it is unclear which diarrhoeal disease the animal is suffering from.