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