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Occult Blood

Alternative Names:Faecal Occult Blood
Laboratory:Clinical Biochemistry
Test Code:FAOCBL
Specimen Types:Faeces
Container Types:
Plain 70mL pot
Collection & Request Instructions:

Three (3x) separate occasions recommended.

Transport Instructions between Sites and/or Laboratories:Room Temperature
Additional Notes:

False positives may occur through dietary factors. The patient should not ingest any iron medications, or any food prepared from red meat, for three days prior to the test.

False negatives may be caused by ingestion of large doses of ascorbic acid (Vitamin C).