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Test Code FIT Occult Fecal Immunochemical Test

Synonyms/Keywords

FIT, FOBT, iFOBT, occult blood

Specimen Requirements

Specimen Type Preferred Container/Tube Acceptable Container/Tube Specimen Volume Specimen Minimum Volume
(allows for 1 repeat)		 Pediatric Minimum Volume
(no repeat)
Stool 1 innoculated Polymedco sample device        

 

Collection/Processing Instructions

Only 1 (one) sample collected in the Polymedco OC-Light S Fit Bottle is required.

 

There are no diet restrictions.

 

Do not collect samples during or until three days after a menstrual period, during the presence of bleeding hemorrhoids, constipation bleeding, or blood in the urine.

 

  1. Open the green cap of the patient-labeled sampling device
  2. Randomly scrape the surface or stamp 5-6 different areas of the stool sample with the sampling probe; cover the grooved portion of the probe completely with sample.
  3. Close the device by inserting the probe and screwing the cap on tightly; do not reopen.
  4. Drop off sample to the nearest laboratory or mail in.

 

Specimen Stability Information

Specimen Type Temperature Time
Stool-Polymedco device Ambient 15 days
Refrigerate 30 days

 

Rejection Criteria

Frozen specimens
Para-Pak C&S transport medium
Other Cary Blair transport medium
Raw stool

 

Interpretations

Results obtained with this test should not be considered conclusive evidence of the presence or absence of GI bleeding or pathology. This test is designed for preliminary screening, and is not intended to replace other diagnostic procedures, such as colonscopy or sigmoidoscopy in combination with double contrast barium x-ray.

 

Certain medications such as aspirin and non-steroidal anti-inflammatory drugs may cause gastrointestinal irritation and subsequent bleeding in some patients and cause positive results.

 

Because gastrointestinal lesions may bleed intermittently and blood in feces is not distributed uniformly, a negative test does not ensure absence of lesion.

Reference Range Information

Performing Location Reference Range
Marshfield Negative

Marshfield Labs Performing Department

Marshfield Labs Molecular Pathology

Performing Information

Performing Location Day(s) Test Performed Analytical Time Methodology/Instrumentation
Marshfield Monday through Sunday 1 day Polymedco OC-Light S FIT

CPT Codes

CPT Modifier
(if needed)		 Quantity Description Comments
82274     Diagnostic screening  
G0328     Diagnostic screening  

Outreach CPT Codes

CPT Modifier
(if needed)		 Quantity Description Comments
82274     Diagnostic screening  
G0328     Diagnostic screening  

Ordering Applications

Ordering Application Description
Cerner Occult Fecal Immunochemical Test