Giardia Antigen, Feces
Use
The Giardia antigen test is used for sensitive screening for the detection of Giardia antigens present in fecal specimens. It is ideal for settings where giardiasis is specifically suspected, such as outbreak scenarios. Giardia is a protozoan parasite often found in contaminated natural waters, and infection can lead to a variety of gastrointestinal symptoms. This test supports the evaluation of patients with suspected giardiasis and helps in determining the appropriate clinical management in cases of acute and chronic giardiasis.
Special Instructions
Ensure that the specimen submitted is either preserved feces using a fecal container with 10% buffered formalin or unpreserved feces. Avoid submitting duodenal, colonic wash, or small bowel aspirates. Use the provided Stool Collection Kit, and complete the necessary forms if not ordering electronically.
Limitations
The Giardia antigen detection should be used as an aid in the diagnosis of giardiasis, and it is recommended to test at least two consecutive fecal specimens by enzyme-linked immunosorbent assay for more reliable results. The detection may be less sensitive if the Giardia organisms are only present in small numbers or are located only in the duodenum. Grossly bloody feces or samples with large amounts of leukocytes or red blood cells may give false-positive results.
FDA ApprovedNew York Approved
Methodology
Immunoassay (ELISA)
Biomarkers
LOINC Codes
- 6412-1
- 6412-1
Result Turnaround Time
1-3 days
Related Documents
For more information, please review the documents below
Specimen
Stool
Volume
5 grams
Minimum Volume
2 grams
Container
Fecal container with 10% buffered formalin preservative
Causes for Rejection
Grossly bloody feces, very mucoid feces, specimens preserved in ECOFIX (green cap), C and S (orange cap), or merthiolate formalin (MF), duodenal aspirates, small bowel aspirates
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | 60 days |