and again in late 2007. According to the DEA's Microgram from December 2007, the Concord Police Department in Contra Costa County, California, in the US, seized "a small piece of crudely lined white blotter paper without any design, suspected LSD 'blotter acid'". They added "Unusually, the paper appeared to be hand-lined using two pens, in squares measuring approximately 6 x 6 millimeters. The paper displayed fluorescence when irradiated at 365 nanometers; however, color testing for LSD with para-dimethylaminobenzaldehyde (Ehrlich's reagent) was negative. Analysis of a methanol extract by GC/MS indicated not LSD but rather DOC (not quantitated but a high loading based on the TIC)". DOC is sometimes misrepresented as LSD by unscrupulous dealers. This is particularly dangerous, as DOC is not known to have the safety profile of LSD. It can be particularly unsafe, in comparison to LSD, for those suffering from hypertension, as amphetamine compounds are known to cause sharp increases in systolic blood pressure. Drug prohibition laws Canada Listed as a Schedule 1 as it is an analogue of amphetamine. The CDSA was updated as a result of the Safe Streets Act changing amphetamines from Schedule 3 to Schedule 1. Australia Unscheduled but can be controlled as schedule II as an analogue of DOB. China As of October 2015 DOC is a controlled substance in China. New Zealand Scheduled. Denmark Denmark added DOC to the list of Schedule I controlled substances as of 8.4.2007. Germany Scheduled in Anlage I since 22.1.2010. Sweden Sveriges riksdag added DOC to schedule I ("substances, plant materials and fungi which normally do not have medical use") as narcotics in Sweden as of Aug 30, 2007, published by Medical Products Agency in their regulation LVFS 2007:10 listed as DOC, 4-klor-2,5-dimetoxi-amfetamin. DOC was first classified by Sveriges riksdags health ministry Statens folkhälsoinstitut as "health hazard" under the act Lagen om förbud mot vissa hälsofarliga varor (translated Act on the Prohibition of Certain Goods Dangerous to Health) as of Jul 1, 2004, in their regulation SFS 2004:486 listed as 4-klor-2,5-dimetoxiamfetamin (DOC). United Kingdom Class A. United States DOC is not scheduled or controlled at the federal level in the United States, but the Department of Justice considers it to be an analogue of DOB and, as such, possession or sale could be prosecuted under the Federal Analogue Act. In the United States, the analogues DMA, DOB, and DOM are Schedule I controlled substances. US State