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Entamoeba histolytica Antigen

Item Value
Approval req'd? No
Available Stat? No
Test code EHAG
Performed by Quest
Sendout? yes
Method EIA
Collection Instructions No special preservative is required. Transport to lab immediately after collection.

C & S (Cary & Blair) or O&P collection set are unacceptable
Container type Urine cup (DO NOT collect in C & S (Cary & Blair) or O&P collection kit)
Amount to Collect 2 gm
Sample type Stool
Preferred volume 2 gm
Min. Volume 1 gm
UCSF Rejection Criteria Samples collected in preservative
Processing notes Freeze stool and transport to China Basin frozen. Order Quest test code 63982P
Ref Lab Rejection Criteria Specimens stored in 10% formalin, SAF, PVA or equivalent fixatives · C & S (Cary & Blair) · Rectal swabs · Diaper specimens · Liver abscess
Normal range Not detecred
Synonyms Entamoeba histolytica Ag
Stability Room temperature 2 hours, refrigerated 2 days, frozen 1 week
Turn around times Set up: Monday, Wednesday, Friday. Report available: 1-4 days
Additional information Extraintestinal amebiasis is frequently found without trophozoites or cysts in stool: patients may have a negative stool antigen result.

Entamoeba histolytica are intestinal parasites that infect a half billion people worldwide annually. Of those infected, most are infected with the non-pathogenic E. dispar, which has not been associated with disease. I

t is estimated that approximately 10% of the half billion people infected each year are infected with the pathogenic E. histolytica. These individuals become symptomatic and develop colitis and liver abscesses.
CPT coding 873347-90
LOINC code 29905-7
Last Updated 1/20/2016 10:58:02 AM
Entry Number 1658
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