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Dear colleagues, Our local policy is to routinely test all urine samples for nitrite adulteration. We have been doing this for about 2 years and have never identified an adulterated sample. The test we use is run in the Abbott Architect and is quite expensive. Given our zero pick up rate I am inclined to drop this practice and save some money but before I do this I would be very interested to know what other drugs of abuse testing labs do regarding nitrite, or other adulteration checks. I will post a summary of responses in due course, Best wishes Ian Barlow Scunthorpe UK ------ACB discussion List Information-------- This is an open discussion list for the academic and clinical community working in clinical biochemistry. Please note, archived messages are public and can be viewed via the internet. Views expressed are those of the individual and they are responsible for all message content. ACB Web Site http://www.acb.org.uk List Archives http://www.jiscmail.ac.uk/lists/ACB-CLIN-CHEM-GEN.html List Instructions (How to leave etc.) http://www.jiscmail.ac.uk/