<i>Giardia lamblia</i>, Direct Detection EIA
| Giardia lamblia, Direct Detection EIA | | | |
| Number | | 182204 |
| CPT | | 87329 |
| Related Information | | Cryptosporidium and Isospora Smear, Stool Cyclospora Smear, Stool Giardia lamblia, EIA and Ova and Parasites Examination Ova and Parasites Examination Parasite Identification |
| Synonyms | | Stool for Giardia lamblia |
| Test Includes | | Immunoassay for Giardia lamblia |
| Specimen | | Stool |
| Volume | | 2 g (thumbnail size portion of stool), 2 mL liquid stool |
| Minimum Volume | | 2 g, 2 mL stool in formalin portion of O & P transport kit |
Container | | O & P transport vial with formalin (Para Pak - Pink)
(preferred); stool C & S transport vial with Cary Blair
medium (Para Pak - Orange); sterile screw cap container |
| Collection | | Fecal specimens for parasitic examination should be collected before initiation of antidiarrheal therapy or antiparasitic therapy. The highest yield on hospitalized patients occurs when diarrhea is present on admission or within 72 hours of admission. The onset of diarrhea more than 72 hours after admission is usually caused by Clostridium difficile toxin rather than parasites or the usual stool pathogens. The following recommendations are made for efficient and cost-effective diagnosis of diarrheal disease in patients admitted with gastroenteritis. - Submit one or two specimens per diarrheal illness immediately. Consider requesting the EIA for Giardia (see tests Giardia lamblia, EIA and Ova and Parasites Examination [188110] and Giardia lamblia, Direct Detection EIA [182204] ) if that is the primary suspected organism.
- If those are negative, submit an additional specimen after 5 days.
- Patients who are immunocompromised by AIDS, malignancy, or immunosuppressive therapy may require additional testing for unusual stool pathogens (eg, Cyclospora [183145] or Cryptosporidium/Isospora [182378]).
|
| Storage Instructions | | Maintain specimen in O & P transport with formalin at room
temperature. Specimen in C & S transport vial should be
refrigerated or frozen. Specimen in sterile container
should be frozen. |
| Causes for Rejection | | Inappropriate specimen transport device; improper labeling; specimen received after prolonged delay (usually more than 5 days) |
| Reference Interval | | Negative |
| Use | | Rapid detection of Giardia lamblia from clinical samples |
| Methodology | | Immunoassay |
| Contraindications | | Do not collect specimen for 1 week after barium or laxative administration. |
|