Giardia Lamblia AG, Stool
Send 2 g (thumbnail size portion of stool) or 2 mL liquid stool in a sterile container. If past 24 hours, stool must be sent in the formalin vial from an O&P transport kit.
Enzyme immunoassay (EIA)
Unpreserved/Refrigerated: 24 hours -- Preserved/Room temp or Refrigerated: 18 months
Giardia Antigen testing is performed to monitor the effectiveness of therapy and to diagnose infections. The antigen test is very specific for Giardia and will not detect other parasites. A routine Ova and Parasite examination is required if other parasites are suspected. The antigen test is considered to be more sensitive for Giardia than traditional Ova and Parasite testing.