On August 9, 2009 – two days after Sakai's arrest, a urine test result came up negative. Light use of methamphetamine can only be detected in a urine test within one to four days after use. On August 19, 2009, investigators announced that Sakai's hair tested positive for the stimulant drug, although the results were weak. Before Sakai was caught, she reportedly dyed and cut her hair; both practices would affect the testing results. Because of the positive result in the hair test, Sakai's jail time was extended another nine days – until August 28, 2009.