Faecal immunochemical tests for haemoglobin (FIT) are now used in asymptomatic bowel screening programmes and also in assessment of patients presenting with lower bowel symptoms.  FIT specimen collection devices have a stick attached to the cap of the tube: this stick has dimples or grooves near the end to collect the correct amount of faeces. Our instructions are simple, namely, “dip the end of the stick into your poo” and “scrape the end of the stick along the sample”, and have pictures of exactly what sample is required. However, many seem surprised at how little faeces is collected, only 2 mg in the FIT used in Scotland for both clinical purposes.  Interestingly, some assume that more must be better and do try very hard to give a little (or a lot) extra in the device!  To date, very little attention has been paid to this aspect of FIT.  Recently, however, a very relevant paper has been published.1

Continue reading “FIT – a little goes a long way”