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Test ID GIAR Giardia Antigen, Feces

Useful For

Sensitive screening for the detection of Giardia antigens present in fecal specimens

Method Name

Enzyme-Linked Immunosorbent Assay (ELISA)

Reporting Name

Giardia Ag, F

Specimen Type


Specimen Required

Ordering Guidance

Duodenal, colonic wash, or small bowel aspirates are not acceptable for this test. If giardiasis is suspected, order OAP / Ova and Parasitic, Concentrate and Permanent Smear, Microscopy, Feces.

Specimen Required

Submit only 1 of the following specimens:



Specimen Type: Preserved feces


-Formalin 10% Buffered Neutral (T466)

-Stool Collection Kit, Random (T635)


Preferred: Fecal container with 10% buffered formalin preservative

Acceptable: SAF (sodium acetate formalin)

Specimen Volume: 5 g

Specimen Stability Information: Ambient (preferred) 60 days


Specimen Type: Unpreserved feces


-Stool container, Small (Random), 4 oz (T288)

-Stool Collection Kit, Random (T635)

Container/Tube: Fecal container

Specimen Volume: 5 g

Specimen Stability Information: Frozen 60 days

Specimen Minimum Volume

2 g

Specimen Stability Information

Specimen Type Temperature Time Special Container
Fecal Varies

Reference Values


Day(s) Performed

Monday through Saturday

Performing Laboratory

Mayo Clinic Laboratories in Rochester

CPT Code Information


LOINC Code Information

Test ID Test Order Name Order LOINC Value
GIAR Giardia Ag, F 6412-1


Result ID Test Result Name Result LOINC Value
24085 Giardia Ag, F 6412-1

Test Classification

This test has been cleared, approved, or is exempt by the US Food and Drug Administration and is used per manufacturer's instructions. Performance characteristics were verified by Mayo Clinic in a manner consistent with CLIA requirements.

Report Available

Same day/1 to 4 days

NY State Approved