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How far back can a urine test dectect marajuana?

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Posted on Tue, 22 Jul 2014
Question: How far back can a urine test dectect marajuana? I took marajuana on XXXXXXX 6th and 7th. I had my drug test on XXXXXXX 26th. I had two or three hits each time. I only weigh 120 lbs. I have a fast metabolism and I work out every day. I drink a lot of water every day to help.
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Answered by Dr. Praveen (3 hours later)
Brief Answer:
Minumum of 7 to 10 days

Detailed Answer:
Hi dear.Thanks for giving me an opportunity to address your query.

According to me time taken for most drugs including marijuana depends on various factors such as frequency, dosage and last time of use, genetic makeup, the state of metabolism, digestive and excretory systems and above all the sensitivity and specificity of the test employed for detection.

If you are not a regular user then upto 7 to 10 days (subject to variation depending on the above mentioned factors) is the approximate detection time in urine post usage.Fast metabolism and good hydration can have a marginal effect in helping the drug to get excreted faster.

Hope this answers your query.
Above answer was peer-reviewed by : Dr. Prasad
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Follow up: Dr. Praveen (13 hours later)
What are the chances of me passing that drug test?
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Answered by Dr. Praveen (6 hours later)
Brief Answer:
Chances are high

Detailed Answer:
Hi dear.Thanks for writing me back.

Since the drug test was done on 26th XXXXXXX (after 19 days of initial exposure) chances of passing are pretty high(>95%).

Hope this answers your query.
Above answer was peer-reviewed by : Dr. Chakravarthy Mazumdar
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Answered by
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Dr. Praveen

General & Family Physician

Practicing since :2008

Answered : 1055 Questions

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How far back can a urine test dectect marajuana?

Brief Answer: Minumum of 7 to 10 days Detailed Answer: Hi dear.Thanks for giving me an opportunity to address your query. According to me time taken for most drugs including marijuana depends on various factors such as frequency, dosage and last time of use, genetic makeup, the state of metabolism, digestive and excretory systems and above all the sensitivity and specificity of the test employed for detection. If you are not a regular user then upto 7 to 10 days (subject to variation depending on the above mentioned factors) is the approximate detection time in urine post usage.Fast metabolism and good hydration can have a marginal effect in helping the drug to get excreted faster. Hope this answers your query.