Hi Sian This is not definite as it depends on metabolism, how much they use, potency etc, but I believe as long as a month for a habitual user. June -----Original Message----- From: SBlair [mailto:[log in to unmask]] Sent: 28 April 2004 09:30 To: [log in to unmask] Subject: Is anyone able to give me a definitive answer? How long is it for a negative result on urine sample for Cannabis, in a long term (15yrs at least daily) user once they have stopped smoking the stuff? Sian ~~~~~~~~~~~~~~~ Please remove this footer before replying. Visit http://www.jiscmail.ac.uk/lists/occ-health.html for list archives Confidentiality. This electronic transmission is strictly confidential to the sender and intended solely for the addressee. It may contain information which is covered by legal, professional or other privilege. If you are not the intended addressee, or someone authorised by the intended addressee to receive transmissions on behalf of the addressee, you must not retain, disclose in any form, copy or take any action in reliance on this transmission. If you have received this transmission in error, please notify the sender as soon as possible and destroy this message. ~~~~~~~~~~~~~~~ Please remove this footer before replying. Visit http://www.jiscmail.ac.uk/lists/occ-health.html for list archives