PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 1873308-3 1991 After protein precipitation with perchloric acid the analytes are completely separated within 15 min and determined down to a plasma concentration of 20 ng ml-1 using amperometric detection at 800 mV relative to an Ag/AgCl reference electrode. Perchloric Acid 33-48 interleukin 17F Homo sapiens 156-160