Giardiasis

Key Information	Appropriate Tests
	Fresh specimens of faeces or duodenal contents - examination (microscopy, antigen detection) for Giardia intestinalis. Small bowel (jejunal) biopsy rarely required.
Recurrent infection	Immunoglobulins G, A, M if underlying immunoglobulin deficiency is suspected.

Key Information

Appropriate Tests

Fresh specimens of faeces or duodenal contents - examination (microscopy, antigen detection) for Giardia intestinalis.

Small bowel (jejunal) biopsy rarely required.

Recurrent infection

Immunoglobulins G, A, M if underlying immunoglobulin deficiency is suspected.

Glossary Terms