PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 7803562-5 1994 Inter-assay relative standard deviation (RSD) at concentrations of 5.1, 76.0 and 247 ng ml-1 methadone are 5.5, 2.5 and 3.6% respectively (n = 10) and intra-assay RSD at concentrations 2.3, 25.2 and 217 ng ml-1 are 5.3, 3.6 and 6.8% (n = 5). Methadone 93-102 interleukin 17F Homo sapiens 88-92 7803562-7 1994 Extraction of control drug free hair samples spiked with methadone at concentrations of 100, 250 and 400 ng ml-1 achieved recoveries of 86, 80 and 89%, respectively. Methadone 57-66 interleukin 17F Homo sapiens 108-112