Eighth Circuit (Retired Justice O’Connor) upholds probation revocation based on defendant’s positive “sweat patch” tests for narcotics use. Decision of the Day Blog. Drug Testing: Eighth Concludes That Sweat Patches Are Generally Reliable U.S. v. Meyer, 06-2961 (8th Cir. Apr. 25, 2007) The Eighth sides with the government, joining the Tenth Circuit in concluding that the patches are generally reliable. See United States v. Gatewood, 370 F.3d 1055, 1060-62 (10th Cir. 2004), vacated on other grounds, 543 U.S. 1109 (2005). However the court explains that district courts need to scrutinize this evidence on a case-by-case basis. The defendant had eight negatives before receiving a bad test. His explanation was that his job duties changed from hauling away nice cars to moving the beaters, and we all know beater drivers are dopers. Wait I thought coke users rode around in nice rigs, at least in the TV shows. Justice Sandra Day O’Connor authors the opinion.