Both recovering addicts and drug testing companies seem to be
in agreement that, with urine testing, cocaine is detectable
from between 2 to 6 days, with results depending on the
quantity of use, frequency of use, period of consistent
use, and other variables.
The MedHelp forum for recovering addicts cites 2-3 to up to
"It can be detected for approximately 48-72 hours after single
use. Frequent or heavy use can be detected for longer."
But it also notes that hair testing can detect it for longer
"Cocaine is detectable with hair tests and is included in the
standard set of substances tested for with these tests. Hair
tests generally take the most recent 1.5 inches of growth and
use those for testing. That provides a detection period of
approximately 90 days. If an individual's hair is shorter
than 1.5 inches, this detection period will be shorter."
Finally, OHS Health and Safety Services, who test employees
for a living, note:
"The length of time any drug (illicit or prescribed) stays
in your system will vary. In large part, it depends on your
physiological makeup (e.g., your physical height, weight,
your amount of body fat, your age, current state of health,
whether or not you exercise mildly-aggressively-or at all).
Whether or not you are undergoing any degree of stress
(i.e., your 'state of mind') at the time you ingest drugs
can play a part as well.
Still other considerations include your 'frequency' of use
(1x per day? 3-5x per day?), the 'quantity' of drug you used
each time, and the 'length of time' (days? weeks? months?)
of your consistent drug-use prior to your drug test. Even
the quality ('potency') of the drug you ingest determines
'how long' the drug is detectable in your system when your
urine is analyzed (tested) at the lab."
"Cocaine (Candy, Coke, Crack, Flake, Rocks, Snow, Whitecoat),
Please be sure to submit a Request for Clarification before
rating the answer if anything is unclear.
Additional information may be found from further exploration
of the links provided above, as well as those resulting from
the Google searches outlined below.
Searches done, via Google:
cocaine "stays in the system" OR "is detectable"