d) spectroscopically analyzing {HEAD ~ the detected light} for {TAIL ~ signals} that are characteristic of the analyte being analyzed, said test element being substantially free of reagents during said steps a) d) 
for
d ) spectroscopically analyzing { HEAD ~ the detected light } for { TAIL ~ signals } that are characteristic of the analyte being analyzed , said test element being substantially free of reagents during said steps a ) d )
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH