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Test Code FOBI Occult Blood, Stool (FIT)

Methodology

OC-light FIT S Immunoassay performed at Bronson Battle Creek Laboratory

OC-Auto FIT Immunoassay performed at Bronson Methodist Laboratory.  Samples collected at Bronson South Haven Laboratory and Bronson Lakeview Laboratory will be performed at Bronson Methodist Laboratory.

The OC-FIT immunoassay method for fecal occult blood has no dietary restrictions. 

 

Please note the following limitations: 

  • This method detects intact human hemoglobin.  It is not intended for detection of upper GI bleeding due to the breakdown of hemoglobin during intestinal transit.  However in cases of extreme GI bleeding it is possible for this test to be positive.   The Mayo test  HemoQuant (HQ) may be useful in investigating possible upper GI bleeding.
  • Patients with the following conditions should not be considered for testing as these conditions may contaminate the stool and cause false positive test results:
    • Bleeding hemorrhoids
    • Constipation bleeding
    • Urinary bleeding
    • Menstrual bleeding

Performing Laboratory

Bronson Laboratory Services-Microbiology Section

Specimen Requirements

Patient Preparation:  The OC FIT  method is a sensitive immunoassay without the limitations of traditional guaiac testing.  There are no dietary or medicinal restrictions. 
 

Specimen Type: Stool

Collection Instructions:  Label vial with patient’s name, date of birth, and date and time of collection.

Container/Tube: 

All Outpatients - OC Auto FIT transport

                  

All BMH, BLH and BSH.  BBC (ED and Inpatients only) - OC Light S FIT transport

Outpatient:  Please follow instructions on kit envelope with either the OC Light FIT S Collection vial or the OC Auto FIT collection vial.

Instructions in Spanish Here
Inpatient: Small amount of stool in plastic cup with screw top.

Specimen Handling:  Specimen in OC FIT vial must arrive in the laboratory within 15 days of collection for outpatients and within 4 hours (if raw stool) for inpatients.

Specimen Transport Temperature

Ambient 15 days/Refrigerate up to 30 days-OC-FIT vial

Ambient 4 hours-Plastic stool vial

Reference Values

Negative

Day(s) Test Set Up

Monday through Sunday

Test Classification and CPT Coding

82274