Methodology
Coulometric Titration
Specimen Type
Stool
Performing Lab
Quest Diagnostics Chantilly
Epic ID
LAB00391
Lab Test Days
Monday-Friday
Standard TAT
2-5 Days
Collection Information
Specimen Required
2-10 mL Random Watery Liquid Stool (24-Hour, 48-Hour, or 72-Hour)
Container Type
Sterile Container
Collection Instructions
Submit a frozen specimen of watery liquid feces in a plastic screw-cap container. Keep feces refrigerated during collection and transport frozen. Only watery liquid feces are an acceptable specimen. In the event a formed fecal specimen is submitted, the test will not be performed and will be cancelled.
Processing Information - Lab Use Only
Transport Temperature
Refrigerated-OK/Frozen-OK
Specimen Stability
Room Temp: Unacceptable; Refrigerated: 7 Days; Frozen: 60 Days (preferred)
Rejection Criteria
Specimens in paint cans; Formed stool; Specimens received refrigerated
Test Volume Required
10 mL Random Watery Liquid Stool
Minimum Test Volume
2 mL Random Watery Liquid Stool
Processing Instructions
Indicate collection time duration (24-Hour, 48-Hour, or 72-Hour) in comments, on specimen and on batch sheet.
CPT Codes
82438
Revised
6/12/25
Initials
SA