Dean Cabby
Dean Cabby thanked Juston Bene's answer
My ex- wife took a hair follicle test that came up positive for cocaine. She scored roughly 7800 pg/mg for the parent substance cocaine, 650 for benzoylecgonine, 3529 for cocaethylene and 220 for norcocaine. She claims she only did it once. Is that possible?

absolutely, hair follicle test are as accurate as they make and even if only used once can be detected as far back as 6 months.