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Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

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How Long Does Crack Cocaine Stay In System?

How long does cravk covaine stay in your system.i think ome of my btothers is doing it,and I need go know when to drug test him
I think my family member is using crack cocaine,how long does it stay in your in your system,so I can test at the right time
Fri, 19 Sep 2014
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Psychiatrist,  's  Response
hi..thanks for writing..

cocaine usually detected in the blood for 2 to 4 days after single administration..

in urine it can be sometimes detected for upto 7 to 10 days after last intake..

in hairs it can be detected as long as up to 90 days..

the levels depend upon the route of administration, if taken by nasal route then peak levels appear within 30 minutes, if take orally peak levels appear within 1 hour, if taken by intravenous administration peak levels appear within 5 minutes in blood..

i hope this information will be helpful to you..best of luck...

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How Long Does Crack Cocaine Stay In System?

hi..thanks for writing.. cocaine usually detected in the blood for 2 to 4 days after single administration.. in urine it can be sometimes detected for upto 7 to 10 days after last intake.. in hairs it can be detected as long as up to 90 days.. the levels depend upon the route of administration, if taken by nasal route then peak levels appear within 30 minutes, if take orally peak levels appear within 1 hour, if taken by intravenous administration peak levels appear within 5 minutes in blood.. i hope this information will be helpful to you..best of luck...