RT Article T1 The use of creatinine and specific gravity measurement to comat urine test dilution JF Federal probation VO 61 IS 4 SP 3 OP 10 A1 Elbert, Michael J. LA English YR 1997 UL https://krimdok.uni-tuebingen.de/Record/1639763708 K1 Drogenkonsum K1 Straftäter K1 Drogentests K1 Urintests K1 Manipulationsmöglichkeiten K1 USA