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HelpTest Code FOBT Fecal Occult Blood, Colorectal Cancer Screen, Qualitative, Immunochemical, Feces
Additional Codes
CNE Order Code: FOBT
Reporting Name
Occult Blood, QL, Immunochemical, FUseful 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
FecalOrdering 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
Negative
This test has not been validated in a pediatric population, results should be interpreted in the context of the patient's presentation.
CPT Code Information
82274
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 |
Interpretation
This is a quantitative assay, but results are reported qualitatively as negative or positive for the presence of fecal occult blood; the cutoff for positivity is 100 ng/mL hemoglobin. The following comments will be reported with the qualitative result for patients older than 17 years:
-Positive results; further testing is recommended if clinically indicated. This test has 97% specificity for detection of lower gastrointestinal bleeding in colorectal cancer.
-Negative results; this test will not detect upper gastrointestinal bleeding; HQ / HemoQuant, Feces test should be ordered if clinically indicated.
Reject Due To
All specimens will be evaluated at Mayo Clinic Laboratories for test suitability.Method Name
Immunochemical
Forms
If not ordering electronically, complete, print, and send 1 of the following forms with the specimen:
-Oncology Test Request (T729)
Day(s) Performed
Monday through Saturday