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Test Code Billings Clinic: 6967 Mayo: GIAR Giardia Antigen, Feces

Reporting Name

Giardia Ag, F

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Useful For

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

Method Name

Enzyme-Linked Immunosorbent Assay (ELISA)


Ordering Guidance


Duodenal, colonic wash, or small bowel aspirates are not acceptable for this test. If giardiasis is suspected, order OPE / Ova and Parasite, Travel History or Immunocompromised, Feces.



Specimen Required


Submit only 1 of the following specimens:

 

Preferred:

Specimen Type: Preserved feces

Supplies:

-Formalin 10% Buffered Neutral 15 mL (T466)

-Stool Collection Kit, Random (T635)

Container/Tube:

Preferred: Fecal container with 10% buffered formalin preservative

Acceptable: SAF (sodium acetate formalin)

Specimen Volume: 5 grams

Specimen Stability Information: Ambient (preferred) 60 days

 

Acceptable:

Specimen Type: Unpreserved feces

Supplies:

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

-Stool Collection Kit, Random (T635)

Container/Tube: Fecal container

Specimen Volume: 5 grams

Specimen Stability Information: Frozen 60 days


Specimen Type

Fecal

Specimen Minimum Volume

2 grams

Specimen Stability Information

Specimen Type Temperature Time Special Container
Fecal Varies

Reject Due To

Grossly bloody feces (containing no visible specimen)
Very mucoid feces
Specimens preserved in ECOFIX (green cap), C and S (orange cap), or methiolate formalin (MF)
Duodenal aspirates
Small bowel aspirates		 Reject

Reference Values

Negative

Interpretation

A positive enzyme-linked immunosorbent assay indicates the presence in a fecal specimen of Giardia antigens.

 

Interpretation of results should be correlated with patient symptoms and clinical picture.

Day(s) Performed

Monday through Friday

Report Available

1 to 3 days

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.

CPT Code Information

87329

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

Forms

If not ordering electronically, complete, print, and send 1 of the following forms with the specimen:

-Microbiology Test Request (T244)

-Gastroenterology and Hepatology Test Request (T728)