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Order Code GI18
Turnaround Time 24-48 hours
Test Includes


Specimen Requirements
Specimen Source
Raw Stool
Transport Container
(Specimen Container)

Plastic screw-cap container

Preferred Specimens
1 g stool
Minimum Volume (uL)
0.3 grams
Collection Instructions
(Transport Temperature)
Transport Frozen
Specimen Stability
Temperature Period
Room temperature Unacceptable
Refrigerated 14 days
Frozen 21 days
Reject Criteria

Specimen received in transport media

Special Instructions

Collect undiluted feces in clean, dry, sterile leak-proof container. Do not add fixative or preservative. Patients may collect stool and hold at room temperature until it can be properly frozen. The time held at room temperature must not exceed 48 hours from time of collection. Specimens can be delivered to patient service center (PSC) or physician’s office for freezing and delivery to the laboratory. Once specimen has been frozen, do not thaw. Transport Frozen.

Test Details
Immunoassay (IA)
Clinical Significance

Lactoferrin is a marker for fecal leukocytes and a positive result is an indicator of intestinal inflammation. This elevation may be caused by acute infectious colitis or active inflammatory bowel disease (IBD). The test may not be appropriate in immunocompromised persons. In addition, this test is not FDA cleared for patients with a history of HIV and/or hepatitis B and C, patients with a history of infectious diarrhea (within 6 months), and patients having had a colostomy and/or ileostomy within 1 month.

Reference Ranges

Not Detected