DRUG

PERIOD OF

DETECTABILITY

amphetamine/methamphetamine ("pep pills,""speed," "ice," "meth")

48 hrs.

barbiturates ("downers," "yellow jackets,""red devils"):

short-acting

24 hrs.

intermediate-acting

48-72 hrs.

long-acting

7 + days

cocaine ("coke," "snow")

48-72 hrs.

marijuana ("pot," "grass," "Mary Jane," "MJ"):

single use

3 days

moderate use (4 times/week)

4 days

heavy use (daily)

10 days

chronic heavy use

21-27 days

methaqualone (quaaludes)

7 + days

phencyclidine (PCP, "angel dust")

8 days