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Pathology and Laboratory Medicine
Test Catalogue

​Fecal Occult Blood


​Ordering Recommendation

  • ​Fecal Occult Blood is for acute care patients only
  • Out patients are to be directed to complete a FIT test. This test is then referred out to a reference laboratory.

​ ​Specimen Requirements

  • ​Feces
​Collection Procedure
  • ​No dietary restriction is required
  • Place a small sample of patient feces in container and screw lid tightly
  • ​24 hours at room temperature
​Grounds for Rejection

Testing Information​ ​

  • ​24 hours a day, 7 days a week
  • STAT testing available
Testing Site​
  • ​SPH, RUH
Results Reporting​
  • 4 hour turnaround time (Routine)
  • 1 hour turnaround time (Stat)
​Clinical Interpretation
  • ​Identifies the globin component of human hemoglobin in fecal specimens with a high degree of analytical sensitivity
  • False negative results may occur since bowel lesions, including some colorectal cancers and significant polyps may not bleed at all or may bleed intermittently, or the blood may not be uniformly distributed in a fecal specimen and therefore missed during collection
  • False positive results may occur due to certain medications that may cause gastrointestinal irritation resulting in occult bleeding
Specimen Retention
  • ​Specimen is discarded immediately after testing
SHR LIS Test Code​
  • ​OBFT (For Laboratory Use Only)


​If you choose to print this information, it is valid only on date of print.

Laboratory Controlled Document LSM-808 v2

Last Modified: Friday, December 1, 2017 |
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