Entamoeba histolytica Antigen

Last Modified: 5/2/2022 2:01:42 PM

Medical Necessity Documentation:  
Client Notes:  
Patient Preparation:  
Specimen Requirements: 2 gms Feces in a Non-Sterile Yellow Capped Container
Collection Instructions: Collect 1-10g (mL) fresh stool specimen in a clean, leakproof
plastic container without preservatives. Store frozen.
Minimum Volume: 1 gram feces
Transport & Storage: Temperature/Stability: 48 hours Refrigerated (Transport)
7 days Frozen (Store)

Stool specimens should be transported in a clean or sterile container as soon as possible and transported at 2° C to 8° C
Store specimens at - 20°C or lower if transport cannot be performed within 48 hours
Rejection Criteria: Stool in preservative • Rectal swabs • Diaper specimens • Liver abscess
Reference Range: Not detected
Critical Ranges:  
Test Comments:  
Methodology: EIA
Clinical Significance: 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. It 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. 
Documentation:  Limitations: Extraintestinal amebiasis is frequently found without trophozoites or cysts in stool: patients may have a negative stool antigen result.
Custom Panel: No


Turn Around Time: 2 to 5 days
Days Performed: Monday, Wednesday, Friday
Sites Performed: Quest - Chantilly to San Juan Capistrano
PHL Test Code: MSOT
EPIC Test Code:
Send Out Test Code: 34964
Alternate Test Names: Entamoeba histolytica Ag; Entamoeba histolytica Antigen Detection; Entamoeba histolytica Antigen, EIA
Included Tests:  
CPT Coding: 87337

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