{"id":529,"date":"2026-07-10T12:47:45","date_gmt":"2026-07-10T11:47:45","guid":{"rendered":"https:\/\/surgerywebtemp.org.uk\/u58973\/?page_id=529"},"modified":"2026-07-10T12:59:22","modified_gmt":"2026-07-10T11:59:22","slug":"feno-fractional-exhaled-nitric-oxide-test","status":"publish","type":"page","link":"https:\/\/surgerywebtemp.org.uk\/u58973\/feno-fractional-exhaled-nitric-oxide-test\/","title":{"rendered":"FeNO (Fractional Exhaled Nitric Oxide) Test"},"content":{"rendered":"<div id=\"x_what-is-a-feno-test-\" class=\"x_elementToProof\">\n<div class=\"x_elementToProof\"><strong>What is a FeNO test?<\/strong><\/div>\n<div><\/div>\n<\/div>\n<div class=\"x_elementToProof\">\n<ul>\n<li class=\"x_elementToProof\">FeNO (fractional exhaled nitric oxide) is a test to measure the levels of nitric oxide in your breath. A high level of nitric oxide when you breathe out can show that your airways are inflamed. This could be a sign that you have\u00a0<a id=\"OWA5848a1eb-97d0-7a62-778f-b8d9bae3a909\" class=\"x_OWAAutoLink\" title=\"Original URL: https:\/\/www.asthmaandlung.org.uk\/conditions\/asthma\/types-asthma. Click or tap if you trust this link.\" href=\"https:\/\/gbr01.safelinks.protection.outlook.com\/?url=https%3A%2F%2Fwww.asthmaandlung.org.uk%2Fconditions%2Fasthma%2Ftypes-asthma&amp;data=05%7C02%7Clauren.mcnicholas%40nhs.net%7C3ac8034acfc64bd012b308dede782dd2%7C37c354b285b047f5b22207b48d774ee3%7C0%7C0%7C639192804892127736%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&amp;sdata=mnd0TKFS0Aw9DLDIWXp0yHfMOIJPHmTy9N4%2BPqsxdf4%3D&amp;reserved=0\" target=\"_blank\" rel=\"noopener noreferrer\" data-auth=\"NotApplicable\" data-linkindex=\"0\"><u>asthma<\/u><\/a>.<\/li>\n<li class=\"x_elementToProof\">A FeNO test is suitable for adults and most children over five.<\/li>\n<\/ul>\n<div><\/div>\n<\/div>\n<div id=\"x_when-is-a-feno-test-used-\" class=\"x_elementToProof\">\n<div class=\"x_elementToProof\"><strong>When is a FeNO test used?<\/strong><\/div>\n<div><\/div>\n<\/div>\n<div class=\"x_elementToProof\">\n<ul>\n<li class=\"x_elementToProof\">FeNO to diagnose asthma<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<div class=\"x_elementToProof\">If your doctor thinks you may have asthma, they will talk to you about your medical history to find out more about your symptoms. They may use FeNO and other tests, such as\u00a0<a id=\"OWAf207b475-e555-cb8f-a579-ae1a27030e5a\" class=\"x_OWAAutoLink\" title=\"Original URL: https:\/\/www.asthmaandlung.org.uk\/symptoms-tests-treatments\/tests\/spirometry. Click or tap if you trust this link.\" href=\"https:\/\/gbr01.safelinks.protection.outlook.com\/?url=https%3A%2F%2Fwww.asthmaandlung.org.uk%2Fsymptoms-tests-treatments%2Ftests%2Fspirometry&amp;data=05%7C02%7Clauren.mcnicholas%40nhs.net%7C3ac8034acfc64bd012b308dede782dd2%7C37c354b285b047f5b22207b48d774ee3%7C0%7C0%7C639192804892172843%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&amp;sdata=fYZ%2Fnexk6JEx7P5DB9BXmC4UraLHHtWHg8L74z1BKRU%3D&amp;reserved=0\" target=\"_blank\" rel=\"noopener noreferrer\" data-auth=\"NotApplicable\" data-entity-type=\"external\" data-linkindex=\"2\"><u>spirometry<\/u><\/a>\u00a0and\u00a0<a id=\"OWA3f878de5-a6e7-db2a-fd70-7f57fcf7d1bc\" class=\"x_OWAAutoLink\" title=\"Original URL: https:\/\/www.asthmaandlung.org.uk\/symptoms-tests-treatments\/tests\/peak-flow. Click or tap if you trust this link.\" href=\"https:\/\/gbr01.safelinks.protection.outlook.com\/?url=https%3A%2F%2Fwww.asthmaandlung.org.uk%2Fsymptoms-tests-treatments%2Ftests%2Fpeak-flow&amp;data=05%7C02%7Clauren.mcnicholas%40nhs.net%7C3ac8034acfc64bd012b308dede782dd2%7C37c354b285b047f5b22207b48d774ee3%7C0%7C0%7C639192804892191537%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&amp;sdata=GN0%2BogY2Flh7Rd28M%2F9%2FdTin79z6I5hnMbOwfM8ISHo%3D&amp;reserved=0\" target=\"_blank\" rel=\"noopener noreferrer\" data-auth=\"NotApplicable\" data-entity-type=\"external\" data-linkindex=\"3\"><u>peak flow tests<\/u><\/a>, to help confirm your diagnosis.<\/div>\n<\/div>\n<div><\/div>\n<div class=\"x_elementToProof\">\n<div class=\"x_elementToProof\"><\/div>\n<div class=\"x_elementToProof\"><strong>The PCN complete FeNO tests on behalf of the surgeries and your GP will refer you to one of our clinics if required, look out for the booking link which we send out via text!<\/strong><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>What is a FeNO test? FeNO (fractional exhaled nitric oxide) is a test to measure the levels of nitric oxide in your breath. A high&#8230;<\/p>\n","protected":false},"author":6,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"footnotes":""},"class_list":["post-529","page","type-page","status-publish","hentry"],"acf":[],"_links":{"self":[{"href":"https:\/\/surgerywebtemp.org.uk\/u58973\/wp-json\/wp\/v2\/pages\/529","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/surgerywebtemp.org.uk\/u58973\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/surgerywebtemp.org.uk\/u58973\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/surgerywebtemp.org.uk\/u58973\/wp-json\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/surgerywebtemp.org.uk\/u58973\/wp-json\/wp\/v2\/comments?post=529"}],"version-history":[{"count":0,"href":"https:\/\/surgerywebtemp.org.uk\/u58973\/wp-json\/wp\/v2\/pages\/529\/revisions"}],"wp:attachment":[{"href":"https:\/\/surgerywebtemp.org.uk\/u58973\/wp-json\/wp\/v2\/media?parent=529"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}