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Fecal Globin by Immunochemistry (InSure®)

Test Code


CPT Code(s)


Patient Preparation

No special diet or avoidance of drugs or supplements is required for the InSure® test 

Preferred Specimen(s)

Fecal specimen collected from toilet water and brushed on the InSure® FOBT test card

See Stool in the Blood, Urine and Stool section of Specimen Collection and Handling.

Minimum Volume

One InSure® FOBT test card with specimen applied to one window

Collection Instructions

Protect from direct sunlight

Transport Container

InSure® FOBT test card

Transport Temperature

Room temperature

Specimen Stability

Dried samples:
Room temperature: 14 days 
Refrigerated: Unacceptable
Frozen: Unacceptable

Reject Criteria

Stool submitted in any container • InSure® FOBT cards with stool applied to the sample windows will be rejected • Any test card with obvious blood present



Setup Schedule

Set up: Daily; Report available: 1 Day


No interference from foods or drugs that interfere with guaiac-based tests. Detects blood only from lower gastrointestinal tract. May be positive up to three days prior and until three days after menses and if hemorrhoids are present. Should not be used if toilet contains rust or salt water. Toilet freshener should be removed and toilet flushed prior to sample collection.

Clinical Significance

The fecal occult blood test is an immunochromatographic fecal occult blood test that qualitatively detects human hemoglobin from blood in fecal samples. This is a useful screening aid for detecting primarily lower gastrointestinal (G.I.) disorders that may be related to iron deficiency anemia, diverticulitis, ulcerative colitis, polyps, adenomas, colorectal cancers or other G.I. lesions that can bleed. It is recommended for use by health professionals as part of routine physical examinations and in screening for colorectal cancer or other sources of lower G.I. bleeding.

Alternative Name(s)

Fecal Blood, Fecal Hemoglobin, FOBT, Guiac, InSure®, Occult Blood, Stool Blood, Stool Hemoglobin

LOINC®' Code(s)

The Result and LOINC information listed below should not be used for electronic interface maintenance with Quest Diagnostics. Please contact the Quest Diagnostics Connectivity Help Desk for more information at 800-697-9302.

NOTE: The codes listed in the table below are not orderable Test Codes.

Result NameLOINC CodeComponent Name
FECGLOFECAL GLOBIN29771-3Hemoglobin.gastrointestinal

Reference ranges are provided as general guidance only. To interpret test results use the reference range in the laboratory report.

The CPT codes provided are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payer being billed.

LOINC assignment is based on a combination of test attributes, including the method used by the performing laboratory. For tests not performed by Quest Diagnostics, codes are assigned by the performing laboratory.

* The tests listed by specialist are a select group of tests offered. For a complete list of Quest Diagnostics tests, please refer to our Directory of Services.