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24965 Occult Fecal Immunochemical Test

Occult Fecal Immunochemical Test
Test Code: FIT
Synonyms/Keywords
​​FIT, FOBT, iFOBT​, occult blood
Useful For

​​The detection of fecal occult blood in stool which is associated with gastrointestinal disorders such as diverticulitis, polyps, and Crohn's disease, which may lead to colorectal cancer if not treated.  Early diagnosis by fecal occult blood screening and treatment of these problems has been shown to significantly reduce mortality from colorectal cancer.

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 for stool collection​. 

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 stap 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.

​For more information on Specimen Collection, see ​Specimen Transport Pictorial.pdf​​​

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

 

Rejection Criteria
​Frozen specimens
Raw stool
​Para-Pak C&S transport medium
​Other Cary Blair transport medium
Performing Laboratory Information
Performing Location Day(s) Test Performed Analytical Time Methodology/Instrumentation
Marshfield​ Monday through Sunday​ 1 day​ Polymedco Light-S FIT
Reference Range Information

Negative​​

Interpretation
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 irritaition and subsequent bleeding in some patients and cause positive resuls.

Because gastrointestinal lesions may bleed intermittently and blood in feces is not distributed uniformly, a negative tests result does not ensure absence of lesion.
Outreach CPTs
CPT Modifier
(if needed)		 Quantity Description Comments
82274 ​ ​ ​ ​Diagnostic screening ​
G0328​ ​ ​ ​Diagnostic screening ​
Synonyms/Keywords
​​FIT, FOBT, iFOBT​, occult blood
Ordering Applications
Ordering Application Description
​Cerner
 ​Occult Fecal Immu​nochemical Test
If the ordering application you are looking for is not listed, contact your local laboratory for assistance.
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

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

There are no diet restrictions for stool collection​. 

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 stap 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.

​For more information on Specimen Collection, see ​Specimen Transport Pictorial.pdf​​​

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

 

Rejection Criteria
​Frozen specimens
Raw stool
​Para-Pak C&S transport medium
​Other Cary Blair transport medium
Useful For

​​The detection of fecal occult blood in stool which is associated with gastrointestinal disorders such as diverticulitis, polyps, and Crohn's disease, which may lead to colorectal cancer if not treated.  Early diagnosis by fecal occult blood screening and treatment of these problems has been shown to significantly reduce mortality from colorectal cancer.

Reference Range Information

Negative​​

Interpretation
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 irritaition and subsequent bleeding in some patients and cause positive resuls.

Because gastrointestinal lesions may bleed intermittently and blood in feces is not distributed uniformly, a negative tests result does not ensure absence of lesion.
For more information visit:
Performing Laboratory Information
Performing Location Day(s) Test Performed Analytical Time Methodology/Instrumentation
Marshfield​ Monday through Sunday​ 1 day​ Polymedco Light-S FIT
For billing questions, see Contacts
Outreach CPTs
CPT Modifier
(if needed)		 Quantity Description Comments
82274 ​ ​ ​ ​Diagnostic screening ​
G0328​ ​ ​ ​Diagnostic screening ​
For most current information refer to the Marshfield Laboratory online reference manual.