A method for determining {HEAD ~ the presence} of occult blood in {TAIL ~ fecal material} in the water of a toilet bowl using a chemical test pad comprising the steps of: 
A method for determining { HEAD ~ the presence } of occult blood in { TAIL ~ fecal material } in the water of a toilet bowl using a chemical test pad comprising the steps of :
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH