{"id":"W2067065527","doi":"10.1016/j.steroids.2008.10.006","title":"Doping in sport—2. Quantification of the impurity 19-norandrostenedione in pharmaceutical preparations of norethisterone","year":2008,"lang":"en","type":"article","venue":"Steroids","topic":"Hormonal and reproductive studies","field":"Medicine","cited_by":15,"is_retracted":false,"has_abstract":false,"ca_institutions":"","funders":"World Anti-Doping Agency","keywords":"Norethisterone; Chromatography; Anabolic steroid; Norethisterone acetate; Chemistry; Isotope dilution; Nandrolone; Steroid; Impurity; Detection limit; Mass spectrometry; Anabolism; Population; Medicine; Hormone; Research methodology; Biochemistry; Organic chemistry","routes":{"ca_aff":false,"ca_fund":true,"ca_venue":false,"about_ca":false,"invisible_to_affiliation_only":true},"retraction":null,"screen":null,"direct_labels":[],"prediction":{"model_version":"metacan-v3-hybrid-931329e0061c","candidate_categories":[],"consensus_categories":[],"category_scores_codex":[0.0004908253,0.0003402455,0.0002050933,0.001124517,0.0007957182,0.0003826755,0.0002760387,0.001155864,0.001698925],"category_scores_gemma":[0.0007371879,0.0002622271,0.0003402434,0.000450448,0.0005421736,0.000211845,0.0003119891,0.0004040739,0.0006242403],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.0002963033,"about_ca_system_score_gemma":0.0005175533,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.003414325,"about_ca_topic_score_gemma":0.004691957,"domain_scores_codex":[0.9995739,0.0001021044,0.00001989649,0.00007419167,0.0001642973,0.00006562075],"domain_scores_gemma":[0.9996867,0.00006757312,0.00005919231,0.00002436886,0.00008644283,0.00007577588],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"bench_or_experimental","study_design_gemma":"bench_or_experimental","study_design_scores_codex":[0.004132047,0.0007613116,0.06388845,0.0003903737,0.000239734,0.0009452209,0.0006735604,0.0003130076,0.8803466,0.0006908657,0.0008303344,0.0467885],"study_design_scores_gemma":[0.00009669789,0.005862256,0.2440297,0.0002313749,0.0002791808,0.005428975,0.00103293,0.002333822,0.713769,0.0007206834,0.0261478,0.00006764005],"study_design_candidate":"bench_or_experimental","study_design_consensus":"bench_or_experimental","genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.973279,0.01244564,0.002840163,0.0002665178,0.0002498353,0.0001388627,0.000620241,0.00005198489,0.01010775],"genre_scores_gemma":[0.9819051,0.0032896,0.00394586,0.0002825351,0.0001081749,0.00007403507,0.0007462174,0.00002074013,0.009627755],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.003414325,"threshold_uncertainty_score":0.006788909,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.06466553631362262,"score_gpt":0.3422568587069212,"score_spread":0.2775913223932985,"validation_status":"score_only:v0-immature-baseline","note":"Baseline scores from an immature model (maturity gate not passed). Scores rank; they never assert a category."}}