Cryptosporidium Antigen, DFA

Last Modified: 9/19/2019 9:09:39 AM

Medical Necessity Documentation:  
Client Notes:  
Patient Preparation: The patient must not use barium products, antacids, antidiarrheal medications, or laxatives containing oil before collection of specimen for parasitological exam.
Specimen Requirements: 10 grams Stool in Pink Vial from an O&P Kit contains10% Formalin
Collection Instructions: The specimen must be passed into a clean, dry container and must not be contaminated with urine. 

For patient collection instruction sheet see Addendum D
For Spanish patient collection instruction sheet see Addendum D
For Burmese patient collection instruction sheet see Addendum D
For Arabic patient collection instruction sheet see Addendum D

Minimum Volume: 5 grams Stool
Transport & Storage: Temperature/Stability: 60 days Ambient
60 days Refrigerated
Rejection Criteria: Unpreserved stool; Stool in Polyvinyl Alcohol (PVA); BLUE CAP BOTTLE IN O&P KIT; Specimens received frozen.
Reference Range: No Cryptosporidium oocysts seen
Critical Ranges:  
Test Comments: There are 3 possible reports for this test:
1) No Cryptosporidium oocysts seen;
2) Cryptosporidium oocysts seen;
3) Giardia lamblia cysts seen.
The Cryptosporidium direct immunofluorescen stain will also detect Giardia lamblia, but only when cysts are present. For the most sensitive method of Giardia lamblia diagnosis, which detects Giardia specific antigen, use test order code 8625X_[3471], Giardia Antigen EIA.
Methodology: Direct Immunofluorescence Assay
Clinical Significance: Cryptosporidium parvum is an intracellular parasite that causes severe and chronic diarrhea in patients who are
Custom Panel: No


Days Performed: Tuesday, Thursday, Saturday
Sites Performed: Quest - Chantilly
PHL Test Code: CRYAN
EPIC Test Code: LAB3149
Send Out Test Code: 14348
Included Tests:  
CPT Coding: 87015, 87272

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