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Test Code FOBT Fecal Occult Blood, Colorectal Cancer Screen, Qualitative, Immunochemical, Feces

Reporting Name

Occult Blood, QL, Immunochemical, F

Useful For

Colorectal cancer screening


Screening for gastrointestinal bleeding


This test has not been validated for testing of patients with hemoglobinopathies.

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Specimen Type


Ordering Guidance

This test will not detect upper gastrointestinal bleeding. If clinically indicated, order HQ / HemoQuant, Feces.

Specimen Required

Supplies: Fecal Occult Blood Test Kit (T682)

Container/Tube: Fecal Occult Blood Test Kit

Specimen Volume: Specimen must fill the grooved portion of the sample probe
Collection Instructions:

1. Collect a random stool specimen.

2. See Fecal Occult Blood Test Kit package insert for instructions.

3. Specimen must be collected in specific sample vial within 4 hours of defecation.

Specimen Minimum Volume

See Specimen Required

Specimen Stability Information

Specimen Type Temperature Time Special Container
Fecal Refrigerated (preferred) 30 days FOBT
  Ambient  15 days FOBT

Reference Values



This test has not been validated in a pediatric population, results should be interpreted in the context of the patient's presentation.

Test Classification

This test has been cleared, approved, or is exempt by the US Food and Drug Administration and is used per manufacturer's instructions. Performance characteristics were verified by Mayo Clinic in a manner consistent with CLIA requirements.

CPT Code Information


G0328-Government payers (if appropriate)

LOINC Code Information

Test ID Test Order Name Order LOINC Value
FOBT Occult Blood, QL, Immunochemical, F 29771-3


Result ID Test Result Name Result LOINC Value
FOB Occult Blood, Fecal 29771-3

Method Name


Day(s) Performed

Monday through Saturday

Report Available

1 to 3 days