The Synthetic Marijuana Urine Drug Test will test for the presence or absence of five variations of the designer drug known on the streets as “Spice” or “K2.” It is also known as “fake weed”, “yucutan fire” and “legal bud.” Further testing may be necessary if you need a quantitative value. Spice and K2 are known as “fake marijuana,” but they will not be detected in a standard drug test, such as a 5 Panel or 10 Panel.