International Forum of Allergy & RhinologyEarly View CLINICAL LETTER Urinary leukotriene E4 is a biomarker for chronic rhinosinusitis associated with leukotriene dysregulation irrespective of aspirin sensitivity status Beau M. Idler BA, Beau M. Idler BA orcid.org/0000-0003-4895-2185 Alix School of Medicine, Mayo Clinic, Scottsdale, Arizona, USASearch for more papers by this authorDevyani Lal MD, Devyani Lal MD orcid.org/0000-0002-7593-2385 Alix School of Medicine, Mayo Clinic, Scottsdale, Arizona, USA Department of Otorhinolaryngology, Mayo Clinic, Phoenix, Arizona, USASearch for more papers by this authorMichael J. Marino MD, Corresponding Author Michael J. Marino MD marino.michael@mayo.edu Alix School of Medicine, Mayo Clinic, Scottsdale, Arizona, USA Department of Otorhinolaryngology, Mayo Clinic, Phoenix, Arizona, USA Correspondence Michael J. Marino, MD, Department of Otorhinolaryngology, Mayo Clinic, 5777 E Mayo Blvd, Phoenix, AZ 85054, USA. Email: marino.michael@mayo.eduSearch for more papers by this author Beau M. Idler BA, Beau M. Idler BA orcid.org/0000-0003-4895-2185 Alix School of Medicine, Mayo Clinic, Scottsdale, Arizona, USASearch for more papers by this authorDevyani Lal MD, Devyani Lal MD orcid.org/0000-0002-7593-2385 Alix School of Medicine, Mayo Clinic, Scottsdale, Arizona, USA Department of Otorhinolaryngology, Mayo Clinic, Phoenix, Arizona, USASearch for more papers by this authorMichael J. Marino MD, Corresponding Author Michael J. Marino MD marino.michael@mayo.edu Alix School of Medicine, Mayo Clinic, Scottsdale, Arizona, USA Department of Otorhinolaryngology, Mayo Clinic, Phoenix, Arizona, USA Correspondence Michael J. Marino, MD, Department of Otorhinolaryngology, Mayo Clinic, 5777 E Mayo Blvd, Phoenix, AZ 85054, USA. Email: marino.michael@mayo.eduSearch for more papers by this author First published: 24 November 2021 https://doi.org/10.1002/alr.22915 Accepted as an oral presentation at the 2021 ARS 67th Annual Meeting Read the full textAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinked InRedditWechat Early ViewOnline Version of Record before inclusion in an issue RelatedInformation