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Cryptosporidium Antigen details

What Cryptosporidium Antigen shows

Cryptosporidium is a microscopic parasite that infects the intestine and is a common cause of watery diarrhea. It spreads through contaminated drinking or swimming water, food, and contact with infected people or animals, and it resists chlorine. This test looks for Cryptosporidium antigen, a protein from the parasite, in your stool. A positive result indicates the parasite is present and supports infection as the cause of symptoms. A negative result does not completely exclude it, because the parasite can be shed on and off, so repeat samples are sometimes needed. Results are interpreted alongside your symptoms and exposure history.

Tests that include Cryptosporidium Antigen

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