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ID:138 TEST NOW ONLY PERFORMED FOR PAEDIATRICS- Faecal Occult Blood (FOB)
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DescriptionBlood appearing in stool.
IndicationSuspicion of bleeding in the gut
Additional InfoCertain foods can cause false positive results and should be avoided for three days prior to and for the duration of the test eg red meat, black pudding, mackerel, sardines, broccoli, cauliflower, french beans, turnip, artichoke, mushrooms, radishcourgette, cucumber. Large doses of vitamin C can cause false negative results and it should also be avoided. Certain medication may cause GI bleeding and should be discontinued for 2 days prior to test e.g aspirin, colchicine, indomethacin and steroids. Iron tablets should also be avoided.
Concurrent Testsna
Dietary Requirementsna
InterpretationA positive result suggests ulcers, polyps, diverticulosis, colorectal cancer

DepartmentSpecialist Laboratory Medicine
SampleStool
TubePlain Universal
Tube Picture
Collection ConditionsAvoid red meat, certain vegetables (cauliflower, broccoli, parsnips, horseraddish). Iron tablets and aspirin and Vitamin C may cause false results.
Min. VolPea size
Freq.Weekdays

Ref. Range (Male)NA
Ref. Range (Female)NA
Ref. Range (Paed)
Ref. Range NotesNA
Units - Not Defined -
IP Acute TAT- Contact Laboratory
IP Routine TAT1 week
GP Acute TAT- Contact Laboratory
GP Routine TAT1 week
Turnround CommentNA

Originally edited by : JHB. Review due on 15/05/2019 10:39:26. Published By RB on 15/05/2018 10:39:26.