https://rxchat.com/Discuss/Can-Doxycyclne-Interfere-With-A-Drug-Test-234331_s2.htm?utm_source=forums_posts&utm_medium=RSS&utm_campaign=RSS I failed a drug/alcohol test and do not drink or do drugs. I just started taking doxtcycline ad nasa spray. Cold either of these effect my urine screen? - Filed in Doxycycline en-us Copyright 2026 RxChat.com. All Rights Reserved. Tue, 14 Aug 2012 19:50:01 GMT 60 https://rxchat.com/images/mc_logo.png https://rxchat.com/Discuss/Can-Doxycyclne-Interfere-With-A-Drug-Test-234331_s2.htm?utm_source=forums_posts&utm_medium=RSS&utm_campaign=RSS https://rxchat.com/Discuss/Can-Doxycyclne-Interfere-With-A-Drug-Test-234331_s2.htm?utm_source=forums_posts&utm_medium=RSS&utm_campaign=RSS#r_246145 https://rxchat.com/Discuss/Can-Doxycyclne-Interfere-With-A-Drug-Test-234331_s2.htm?utm_source=forums_posts&utm_medium=RSS&utm_campaign=RSS#r_246145 What specifically did you fail for? <br/> <br/> Some medications can cause false positives, including <a href="https://rxchat.com/Categories/Antibiotics/" target="_blank">antibiotics</a>, so if you can post back with more details, I can do more research for you. <br/> <br/> Learn more <a href="https://rxchat.com/wiki/Doxycycline/" target="_blank" rel="nofollow">Doxycycline details</a> here. <br/> <br/> Can you also provide more details on the nasal spray? Tue, 14 Aug 2012 19:50:01 GMT