{"id":"W2028052334","doi":"10.1016/j.jchromb.2007.02.009","title":"Direct detection and quantification of 19-norandrosterone sulfate in human urine by liquid chromatography-linear ion trap mass spectrometry","year":2007,"lang":"en","type":"article","venue":"Journal of Chromatography B","topic":"Hormonal and reproductive studies","field":"Medicine","cited_by":21,"is_retracted":false,"has_abstract":false,"ca_institutions":"","funders":"World Anti-Doping Agency","keywords":"Chemistry; Chromatography; Detection limit; Mass spectrometry; Electrospray ionization; Liquid chromatography–mass spectrometry; Tandem mass spectrometry; Ion trap; Metabolite; Calibration curve; Selected reaction monitoring; Urine; Nandrolone","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":"codex-gemma-dda1882f352a","candidate_categories":[],"consensus_categories":[],"category_scores_codex":[0.001202463,0.0002076861,0.0007052453,0.001464366,0.00009425551,0.00001007004,0.00007754623,0.0001060735,0.000009589219],"category_scores_gemma":[0.00005799338,0.0001601413,0.0002832544,0.001258854,0.0002797314,0.0001618156,0.00001689884,0.0002881626,4.46377e-7],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.00003613246,"about_ca_system_score_gemma":0.00002110634,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.00005459279,"about_ca_topic_score_gemma":0.00002922853,"domain_scores_codex":[0.9980196,0.00006586756,0.0009537989,0.0002564581,0.0004458609,0.0002583721],"domain_scores_gemma":[0.9987257,0.00006253662,0.0006231447,0.0001857376,0.0002455734,0.0001573627],"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":[0.001263227,0.000395057,0.07081082,0.0002207655,0.0002921108,0.00004562884,0.0002202296,0.000001692913,0.9261606,0.00001653773,0.00005106287,0.0005223142],"study_design_scores_gemma":[0.001862122,0.002151652,0.4087119,0.0001843845,0.0001190965,0.0002212677,0.000283305,0.000002960635,0.5860311,0.00006385268,0.0002557038,0.0001126236],"study_design_candidate":"bench_or_experimental","study_design_consensus":"bench_or_experimental","genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.9890309,0.008257487,0.001661965,0.0001748924,0.0001581683,0.0002414353,0.000007273523,0.00002073701,0.0004471432],"genre_scores_gemma":[0.9976165,0.001601611,0.0005026014,0.00001359004,0.0002218576,0.000002365209,0.000005619612,0.00002138133,0.00001447161],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.3401294,"threshold_uncertainty_score":0.6530372,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.01469213115498651,"score_gpt":0.2769356516585162,"score_spread":0.2622435205035297,"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."}}