{"id":4073,"date":"2022-08-08T01:36:37","date_gmt":"2022-08-08T05:36:37","guid":{"rendered":"https:\/\/aafa.org\/feno-tests-to-monitor-feno-levels\/"},"modified":"2025-10-07T14:01:44","modified_gmt":"2025-10-07T18:01:44","slug":"feno-tests-to-monitor-feno-levels","status":"publish","type":"page","link":"https:\/\/aafa.org\/asthma\/asthma-diagnosis\/lung-function-tests-diagnose-asthma\/feno-tests-to-monitor-feno-levels\/","title":{"rendered":"FeNO Tests\u00a0to Monitor FeNO Levels"},"content":{"rendered":"<p>[et_pb_section fb_built=&#8221;1&#8243; admin_label=&#8221;Asthma T-Hero Section&#8221; module_class=&#8221;hero tert&#8221; _builder_version=&#8221;4.18.0&#8243; _module_preset=&#8221;default&#8221; background_image=&#8221;https:\/\/aafa.org\/wp-content\/uploads\/2022\/07\/AAFA-Website_Tertiary_Asthma.jpg&#8221; background_position=&#8221;top_right&#8221; custom_padding=&#8221;1%||1%||true|false&#8221; global_module=&#8221;2247&#8243; saved_tabs=&#8221;all&#8221; collapsed=&#8221;on&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_row _builder_version=&#8221;4.17.4&#8243; _module_preset=&#8221;default&#8221; background_enable_image=&#8221;off&#8221; background_size=&#8221;initial&#8221; background_position=&#8221;bottom_left&#8221; background_horizontal_offset=&#8221;0%&#8221; custom_margin=&#8221;||||false|false&#8221; custom_padding=&#8221;2%||0px||false|false&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_column type=&#8221;4_4&#8243; _builder_version=&#8221;4.17.4&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_text admin_label=&#8221;Nav Parent Title&#8221; module_class=&#8221;tert-parent&#8221; _builder_version=&#8221;4.17.4&#8243; _module_preset=&#8221;default&#8221; header_2_font=&#8221;|600|||||||&#8221; header_2_text_align=&#8221;left&#8221; header_2_text_color=&#8221;#FFFFFF&#8221; header_2_font_size=&#8221;32px&#8221; custom_margin=&#8221;||0px||false|false&#8221; global_colors_info=&#8221;{}&#8221;]<\/p>\n<h2>Asthma<\/h2>\n<p>[\/et_pb_text][et_pb_code admin_label=&#8221;Breadcrumbs&#8221; module_class=&#8221;bcrumb&#8221; _builder_version=&#8221;4.17.4&#8243; _module_preset=&#8221;default&#8221; text_orientation=&#8221;left&#8221; custom_margin=&#8221;||||false|false&#8221; custom_padding=&#8221;||||false|false&#8221; custom_css_main_element=&#8221;font-size:16px;||color: #fff;&#8221; global_colors_info=&#8221;{}&#8221;][\/et_pb_code][\/et_pb_column][\/et_pb_row][\/et_pb_section][et_pb_section fb_built=&#8221;1&#8243; admin_label=&#8221;Main Content&#8221; _builder_version=&#8221;4.17.4&#8243; _module_preset=&#8221;default&#8221; custom_padding=&#8221;2%||2%||true|false&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_row column_structure=&#8221;2_3,1_3&#8243; _builder_version=&#8221;4.17.4&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_column type=&#8221;2_3&#8243; _builder_version=&#8221;4.17.4&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_post_title meta=&#8221;off&#8221; featured_image=&#8221;off&#8221; admin_label=&#8221;Page Title&#8221; module_class=&#8221;tert-content q&#8221; _builder_version=&#8221;4.17.4&#8243; _module_preset=&#8221;default&#8221; title_font=&#8221;|600|||||||&#8221; title_text_align=&#8221;left&#8221; title_text_color=&#8221;#008c99&#8243; title_font_size=&#8221;39px&#8221; background_enable_image=&#8221;off&#8221; background_size=&#8221;contain&#8221; background_position=&#8221;center_left&#8221; module_alignment=&#8221;left&#8221; custom_margin=&#8221;||0px||false|false&#8221; custom_padding=&#8221;||||false|false&#8221; global_colors_info=&#8221;{}&#8221;][\/et_pb_post_title][et_pb_text admin_label=&#8221; Intro Content&#8221; module_class=&#8221;secondary-intro&#8221; _builder_version=&#8221;4.18.0&#8243; _module_preset=&#8221;default&#8221; text_text_color=&#8221;#505050&#8243; text_font_size=&#8221;24px&#8221; text_line_height=&#8221;1.5em&#8221; header_2_font=&#8221;|600|||||||&#8221; header_2_text_color=&#8221;#008c99&#8243; header_2_font_size=&#8221;39px&#8221; custom_margin=&#8221;||3%||false|false&#8221; global_colors_info=&#8221;{}&#8221;]<\/p>\n<p>When you have <a title=\"asthma\" href=\"\/asthma\/\" target=\"_blank\" rel=\"noopener\">asthma<\/a>, your airways become inflamed, making it hard to breathe. There are different types of asthma and there are many diseases that have the same symptoms as asthma.<\/p>\n<p>[\/et_pb_text][et_pb_text admin_label=&#8221;Page Content&#8221; module_class=&#8221;secondary-intro&#8221; _builder_version=&#8221;4.18.0&#8243; _module_preset=&#8221;default&#8221; text_text_color=&#8221;#505050&#8243; text_line_height=&#8221;1.5em&#8221; header_2_font=&#8221;|600|||||||&#8221; header_2_text_color=&#8221;#008c99&#8243; header_2_font_size=&#8221;39px&#8221; custom_margin=&#8221;||3%||false|false&#8221; global_colors_info=&#8221;{}&#8221;]<\/p>\n<p>Knowing if your airways are inflamed can help your doctor make the right diagnosis, find the best management plan and monitor your asthma better. One way they can do this is with a FeNO test.<\/p>\n<h3>What Is FeNO?<\/h3>\n<p>FeNO stands for fractional exhaled nitric oxide. When you breathe out, your breath can show if you have inflamed airways. A FeNO test measures the amount of nitric oxide in your breath. This test helps doctors tell if and how much inflammation you have in your airways.<\/p>\n<h3>How Is FeNO Testing Done?<\/h3>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-3157 size-medium alignright\" style=\"margin-top: 2%;\" src=\"https:\/\/aafa.org\/wp-content\/uploads\/2022\/08\/lung-function-test-feno-lg-300x210.png\" alt=\"Feno Test\" width=\"300\" height=\"210\" \/><\/p>\n<p>A FeNO test is a quick and non-invasive test that is easy for both children and adults to do. To take the test, your doctor will have you blow into a handheld device that will track your results. It is usually done in your doctor\u2019s office, and the test results are available right away. Your doctor can help you understand the results.<\/p>\n<h3>What Does Checking FeNO Levels Do?<\/h3>\n<p>If you have already been diagnosed with asthma, tracking your FeNO levels:<\/p>\n<ul>\n<li>Determines if your current management plan is working properly and how your medicines may need to be increased or reduced<\/li>\n<li>May identify what type of asthma you have<\/li>\n<li>Can track your airway inflammation over time<\/li>\n<li>Can tell your doctor if you have been taking your medicines correctly<\/li>\n<\/ul>\n<p>If you have not been diagnosed with asthma, a FeNO test:<\/p>\n<ul>\n<li>Can support your asthma diagnosis<\/li>\n<li>Helps your doctor know how well you may respond to corticosteroids<\/li>\n<li>Can rule out other conditions that have symptoms similar to asthma<\/li>\n<\/ul>\n<h3>Should I Get a FeNO Test?<\/h3>\n<p>Talk to your doctor about having a FeNO test if:<\/p>\n<ul>\n<li>You have respiratory symptoms that won\u2019t go away but you don\u2019t know if you have asthma<\/li>\n<li>You have asthma but your medicines and treatment plan aren\u2019t reducing your symptoms<\/li>\n<\/ul>\n<p>[\/et_pb_text][et_pb_text admin_label=&#8221;Medical Review&#8221; _builder_version=&#8221;4.19.0&#8243; _module_preset=&#8221;default&#8221; text_text_color=&#8221;#505050&#8243; text_font_size=&#8221;16px&#8221; link_text_color=&#8221;#008C99&#8243; link_font_size=&#8221;16px&#8221; header_5_font=&#8221;|600|||||||&#8221; header_5_text_align=&#8221;left&#8221; header_5_text_color=&#8221;#008c99&#8243; custom_margin=&#8221;||3%||false|false&#8221; link_option_url_new_window=&#8221;on&#8221; global_colors_info=&#8221;{}&#8221;]<\/p>\n<p><small><a title=\"Medical Science Council\" href=\"\/about-aafa\/leadership\/medical-science-council\/\" target=\"_blank\" rel=\"noopener\">Medical Review<\/a> August 2017.<\/small><\/p>\n<p>[\/et_pb_text][et_pb_code admin_label=&#8221;Print&#8221; module_id=&#8221;print&#8221; module_class=&#8221;clearfix&#8221; _builder_version=&#8221;4.17.6&#8243; _module_preset=&#8221;default&#8221; saved_tabs=&#8221;all&#8221; global_colors_info=&#8221;{}&#8221; global_module=&#8221;5156&#8243; theme_builder_area=&#8221;post_content&#8221;]<a href=\"https:\/\/aafa.org\/asthma\/asthma-diagnosis\/lung-function-tests-diagnose-asthma\/feno-tests-to-monitor-feno-levels\/print\/\" rel=\"nofollow\" title=\"Print post\"><svg class=\"WP-PrintIcon wp-print-icon\" width=\"16\" height=\"16\" viewbox=\"0 0 20 20\" fill=\"currentColor\" aria-hidden=\"true\" focusable=\"false\"><path d=\"M6 2h8v4H6z\" \/><path d=\"M3 7h14v7h-3v-3H6v3H3z\" \/><path d=\"M6 12h8v6H6z\" \/><\/svg> Print post<\/a> [\/et_pb_code][\/et_pb_column][et_pb_column type=&#8221;1_3&#8243; _builder_version=&#8221;4.17.4&#8243; _module_preset=&#8221;default&#8221; custom_padding=&#8221;6%||||false|false&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_text ul_type=&#8221;none&#8221; admin_label=&#8221;Side Nav &#8211; Lung Function Tests&#8221; module_class=&#8221;sidenav&#8221; _builder_version=&#8221;4.18.0&#8243; _module_preset=&#8221;default&#8221; text_text_color=&#8221;#008C99&#8243; text_font_size=&#8221;14px&#8221; link_text_align=&#8221;left&#8221; link_text_color=&#8221;#008C99&#8243; link_font_size=&#8221;16px&#8221; link_line_height=&#8221;1.7em&#8221; ul_text_color=&#8221;#008C99&#8243; ul_font_size=&#8221;16px&#8221; ul_line_height=&#8221;1.7em&#8221; header_4_font=&#8221;|700|||||||&#8221; header_4_text_align=&#8221;left&#8221; header_4_text_color=&#8221;#008C99&#8243; header_4_font_size=&#8221;16px&#8221; header_4_line_height=&#8221;1.7em&#8221; background_color=&#8221;#F5EDDF&#8221; custom_padding=&#8221;6%|6%|6%|6%|true|true&#8221; border_color_top=&#8221;#008C99&#8243; global_module=&#8221;9563&#8243; saved_tabs=&#8221;all&#8221; global_colors_info=&#8221;{}&#8221; link_text_color__hover_enabled=&#8221;on|hover&#8221; link_text_color__hover=&#8221;#692D87&#8243;]<\/p>\n<h4><a href=\"\/asthma\/asthma-diagnosis\/lung-function-tests-diagnose-asthma\/\">Lung Function Tests<\/a><\/h4>\n<ul>\n<li><a href=\"\/asthma\/asthma-diagnosis\/lung-function-tests-diagnose-asthma\/feno-tests-to-monitor-feno-levels\/\">FeNO Tests\u00a0to Monitor FeNO Levels<\/a><\/li>\n<li><a href=\"\/asthma\/asthma-diagnosis\/lung-function-tests-diagnose-asthma\/peak-flow-meters\/\">Peak Flow Meters<\/a><\/li>\n<li><a href=\"\/asthma\/asthma-diagnosis\/lung-function-tests-diagnose-asthma\/provocation-trigger-tests\/\">Provocation Tests<\/a><\/li>\n<li><a href=\"\/asthma\/asthma-diagnosis\/lung-function-tests-diagnose-asthma\/spirometry\/\">Spirometry<\/a><\/li>\n<\/ul>\n<p>[\/et_pb_text][et_pb_image src=&#8221;https:\/\/aafa.org\/wp-content\/uploads\/2022\/11\/AAFA-FENO_COVER-jpg.webp&#8221; alt=&#8221;Asthma Disparities Report&#8221; title_text=&#8221;AAFA-FENO_COVER&#8221; url=&#8221;\/wp-content\/uploads\/2022\/08\/feno-tests-to-monitor-feno-levels.pdf&#8221; url_new_window=&#8221;on&#8221; align=&#8221;center&#8221; force_fullwidth=&#8221;on&#8221; admin_label=&#8221;Feno Testing Handout&#8221; _builder_version=&#8221;4.19.0&#8243; _module_preset=&#8221;default&#8221; custom_margin=&#8221;||1%||false|false&#8221; border_radii=&#8221;on|1px|1px|1px|1px&#8221; border_color_all=&#8221;#505050&#8243; box_shadow_style=&#8221;preset3&#8243; global_colors_info=&#8221;{}&#8221;][\/et_pb_image][et_pb_button button_url=&#8221;\/wp-content\/uploads\/2022\/08\/feno-tests-to-monitor-feno-levels.pdf&#8221; url_new_window=&#8221;on&#8221; button_text=&#8221;Download Handout&#8221; button_alignment=&#8221;center&#8221; disabled_on=&#8221;off|off|off&#8221; admin_label=&#8221;FeNO Handout Button&#8221; _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;default&#8221; custom_button=&#8221;on&#8221; button_bg_color=&#8221;#28BDBA&#8221; button_font=&#8221;|600|||||||&#8221; button_use_icon=&#8221;off&#8221; custom_margin=&#8221;6%||||false|false&#8221; custom_css_main_element=&#8221;width:100%;&#8221; global_module=&#8221;792&#8243; saved_tabs=&#8221;all&#8221; global_colors_info=&#8221;{}&#8221;][\/et_pb_button][et_pb_text admin_label=&#8221;Asthma Care for Adults&#8221; module_class=&#8221;aca-sb&#8221; _builder_version=&#8221;4.19.0&#8243; _module_preset=&#8221;default&#8221; text_text_color=&#8221;#505050&#8243; text_font_size=&#8221;16px&#8221; text_line_height=&#8221;1.4em&#8221; link_font=&#8221;||||on|||#008c99|&#8221; link_text_color=&#8221;#008c99&#8243; link_font_size=&#8221;16px&#8221; link_line_height=&#8221;1.4em&#8221; ul_line_height=&#8221;1.7em&#8221; header_2_font=&#8221;|600|||||||&#8221; header_2_text_color=&#8221;#008c99&#8243; header_2_font_size=&#8221;39px&#8221; header_3_font=&#8221;|600|||||||&#8221; header_3_text_align=&#8221;left&#8221; header_3_text_color=&#8221;#008c99&#8243; header_3_font_size=&#8221;28px&#8221; background_color=&#8221;RGBA(255,255,255,0)&#8221; custom_padding=&#8221;0%|0%|0%|0%|true|true&#8221; global_module=&#8221;5087&#8243; saved_tabs=&#8221;all&#8221; global_colors_info=&#8221;{}&#8221;]<\/p>\n<p><a href=\"https:\/\/www.pathlms.com\/aafa\/courses\/8092\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-3050 size-full\" src=\"\/wp-content\/uploads\/2022\/08\/asthma-care-for-adults-bt.png\" alt=\"Asthma Care for Adults\" width=\"630\" height=\"420\" srcset=\"\/wp-content\/uploads\/2022\/08\/asthma-care-for-adults-bt.png 630w, \/wp-content\/uploads\/2022\/08\/asthma-care-for-adults-bt-480x320.png 480w\" sizes=\"(min-width: 0px) and (max-width: 480px) 480px, (min-width: 481px) 630px, 100vw\" \/><\/a><br \/>\nKnowing how to manage asthma is important for better health and quality of life. We offer an online course called <a title=\"Asthma Care for Adults\" href=\"https:\/\/www.pathlms.com\/aafa\/courses\/8092\" target=\"_blank\" rel=\"noopener noreferrer\">ASTHMA Care for Adults<\/a>. This comprehensive program covers a full range of topics everyone with asthma needs to know. This self-paced online course is presented in different formats, such as videos, animations, handouts and more.<\/p>\n<p>[\/et_pb_text][\/et_pb_column][\/et_pb_row][\/et_pb_section]<\/p>\n","protected":false},"excerpt":{"rendered":"<p>AsthmaWhen you have asthma, your airways become inflamed, making it hard to breathe. There are different types of asthma and there are many diseases that have the same symptoms as [&hellip;]<\/p>\n","protected":false},"author":14,"featured_media":0,"parent":115,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"_et_pb_use_builder":"on","_et_pb_old_content":"<p>[et_pb_section fb_built=\"1\" admin_label=\"About Hero Section\" _builder_version=\"4.17.5\" _module_preset=\"default\" background_image=\"2723\" background_position=\"center_right\" custom_padding=\"2%||2%||true|false\" hover_enabled=\"0\" global_module=\"1511\" saved_tabs=\"all\" collapsed=\"off\" global_colors_info=\"{}\" alt=\"About AAFA\" title_text=\"AAFA-Website_Secondary_About\" sticky_enabled=\"0\"] [et_pb_row _builder_version=\"4.17.4\" _module_preset=\"default\" background_image=\"2724\" background_size=\"initial\" background_position=\"bottom_left\" background_horizontal_offset=\"0%\" background_vertical_offset=\"-5%\" custom_margin=\"|||0px|false|false\" custom_padding=\"0px||0px||true|false\" global_colors_info=\"{}\"] [et_pb_column type=\"4_4\" _builder_version=\"4.17.4\" _module_preset=\"default\" custom_padding=\"|||5%|false|false\" global_colors_info=\"{}\"][et_pb_post_title meta=\"off\" featured_image=\"off\" admin_label=\"Page Title\" _builder_version=\"4.17.4\" _module_preset=\"default\" title_font=\"|600|||||||\" title_text_color=\"#FFFFFF\" title_font_size=\"62px\" background_enable_image=\"off\" background_size=\"contain\" background_position=\"center_left\" module_alignment=\"left\" custom_margin=\"||0px||false|false\" custom_padding=\"8%||0px||false|false\" global_colors_info=\"{}\"][\/et_pb_post_title][et_pb_code admin_label=\"Breadcrumbs\" module_class=\"bcrumb\" _builder_version=\"4.17.4\" _module_preset=\"default\" text_orientation=\"left\" custom_margin=\"||||false|false\" custom_padding=\"||||false|false\" custom_css_main_element=\"font-size:16px;||color: #fff;\" global_colors_info=\"{}\"][wpseo_breadcrumb][\/et_pb_code][\/et_pb_column][\/et_pb_row][\/et_pb_section][et_pb_section fb_built=\"1\" admin_label=\"Main Content\" _builder_version=\"4.17.4\" _module_preset=\"default\" background_enable_image=\"off\" background_size=\"initial\" background_position=\"bottom_right\" custom_padding=\"2%||2%||true|false\" global_colors_info=\"{}\"][et_pb_row column_structure=\"2_3,1_3\" _builder_version=\"4.17.4\" _module_preset=\"default\" global_colors_info=\"{}\"] [et_pb_column type=\"2_3\" _builder_version=\"4.17.4\" _module_preset=\"default\" global_colors_info=\"{}\"] [et_pb_text admin_label=\"Page Content\" module_class=\"secondary-intro\" _builder_version=\"4.17.4\" _module_preset=\"default\" text_text_color=\"#505050\" text_font_size=\"24px\" text_line_height=\"1.5em\" header_2_font=\"|600|||||||\" header_2_text_color=\"#008c99\" header_2_font_size=\"39px\" custom_margin=\"||3%||false|false\" global_colors_info=\"{}\"]<\/p><div id=\"page\" class=\"page-global\"><div id=\"BodyTextEditor\"><p><em>A Quick, Easy Way to Measure Airway Inflammation for Better Asthma Treatment<\/em><\/p><p>When you have <a title=\"asthma\" href=\"\/asthma\/\" target=\"_blank\" rel=\"noopener\">asthma<\/a>, your airways become inflamed, making it hard to breathe. There are different types of asthma and there are many diseases that have the same symptoms as asthma.<\/p><p>Knowing if your airways are inflamed can help your doctor make the right diagnosis, find the best management plan and monitor your asthma better. One way they can do this is with a FeNO test.<\/p><h3>What Is FeNO?<\/h3><p>FeNO stands for fractional exhaled nitric oxide. When you breathe out, your breath can show if you have inflamed airways. A FeNO test measures the amount of nitric oxide in your breath. This test helps doctors tell if and how much inflammation you have in your airways.<\/p><h3>How Is FeNO Testing Done?<\/h3><p>A FeNO test is a quick and non-invasive test that is easy for both children and adults to do. To take the test, your doctor will have you blow into a handheld device that will track your results. It is usually done in your doctor\u2019s office, and the test results are available right away. Your doctor can help you understand the results.<\/p><p><img class=\"img-responsive\" src=\"https:\/\/aafa.org\/wp-content\/uploads\/2022\/08\/lung-function-test-feno-lg.png\" alt=\"FeNo Testing for asthma\" \/><\/p><h3>What Does Checking FeNO Levels Do?<\/h3><p>If you have already been diagnosed with asthma, tracking your FeNO levels:<\/p><ul><li>Determines if your current management plan is working properly and how your medicines may need to be increased or reduced<\/li><li>May identify what type of asthma you have<\/li><li>Can track your airway inflammation over time<\/li><li>Can tell your doctor if you have been taking your medicines correctly<\/li><\/ul><p>If you have not been diagnosed with asthma, a FeNO test:<\/p><ul><li>Can support your asthma diagnosis<\/li><li>Helps your doctor know how well you may respond to corticosteroids<\/li><li>Can rule out other conditions that have symptoms similar to asthma<\/li><\/ul><h3>Should I Get a FeNO Test?<\/h3><p>Talk to your doctor about having a FeNO test if:<\/p><ul><li>You have respiratory symptoms that won\u2019t go away but you don\u2019t know if you have asthma<\/li><li>You have asthma but your medicines and treatment plan aren\u2019t reducing your symptoms<\/li><\/ul><p style=\"text-align: center;\"><a title=\"Feno Testing\" href=\"https:\/\/aafa.org\/wp-content\/uploads\/2022\/08\/feno-tests-to-monitor-feno-levels.pdf\" target=\"_blank\" rel=\"noopener\">Download, Print, Share This Guide<\/a><\/p><p style=\"text-align: center;\"><a title=\"FeNO-testing-handout-thumbnail250\" href=\"https:\/\/aafa.org\/wp-content\/uploads\/2022\/08\/feno-tests-to-monitor-feno-levels.pdf\" target=\"_blank\" rel=\"noopener\"><img class=\"inline-attachment\" style=\"height: 324px; width: 250px;\" src=\"https:\/\/aafa.org\/wp-content\/uploads\/2022\/08\/feno-testing-handout-thumbnail250.png\" alt=\"FeNO-testing-handout-thumbnail250\" \/><\/a><\/p><p><em>Made possible in part through a partnership with Circassia Pharmaceuticals.<\/em><\/p><p><small><a title=\"Medical Science Council\" href=\"\/about-aafa\/leadership\/medical-science-council\/\" target=\"_blank\" rel=\"noopener\">Medical Review<\/a> August 2017.<\/small><\/p><\/div><\/div><div id=\"BodyTextEditor\"><p><em>A Quick, Easy Way to Measure Airway Inflammation for Better Asthma Treatment<\/em><\/p><p>When you have <a title=\"asthma\" href=\"\/asthma\/\" target=\"_blank\" rel=\"noopener\">asthma<\/a>, your airways become inflamed, making it hard to breathe. There are different types of asthma and there are many diseases that have the same symptoms as asthma.<\/p><p>Knowing if your airways are inflamed can help your doctor make the right diagnosis, find the best management plan and monitor your asthma better. One way they can do this is with a FeNO test.<\/p><h3>What Is FeNO?<\/h3><p>FeNO stands for fractional exhaled nitric oxide. When you breathe out, your breath can show if you have inflamed airways. A FeNO test measures the amount of nitric oxide in your breath. This test helps doctors tell if and how much inflammation you have in your airways.<\/p><h3>How Is FeNO Testing Done?<\/h3><p>A FeNO test is a quick and non-invasive test that is easy for both children and adults to do. To take the test, your doctor will have you blow into a handheld device that will track your results. It is usually done in your doctor\u2019s office, and the test results are available right away. Your doctor can help you understand the results.<\/p><p><img class=\"img-responsive\" src=\"https:\/\/aafa.org\/wp-content\/uploads\/2022\/08\/lung-function-test-feno-lg.png\" alt=\"FeNo Testing for asthma\" \/><\/p><h3>What Does Checking FeNO Levels Do?<\/h3><p>If you have already been diagnosed with asthma, tracking your FeNO levels:<\/p><ul><li>Determines if your current management plan is working properly and how your medicines may need to be increased or reduced<\/li><li>May identify what type of asthma you have<\/li><li>Can track your airway inflammation over time<\/li><li>Can tell your doctor if you have been taking your medicines correctly<\/li><\/ul><p>If you have not been diagnosed with asthma, a FeNO test:<\/p><ul><li>Can support your asthma diagnosis<\/li><li>Helps your doctor know how well you may respond to corticosteroids<\/li><li>Can rule out other conditions that have symptoms similar to asthma<\/li><\/ul><h3>Should I Get a FeNO Test?<\/h3><p>Talk to your doctor about having a FeNO test if:<\/p><ul><li>You have respiratory symptoms that won\u2019t go away but you don\u2019t know if you have asthma<\/li><li>You have asthma but your medicines and treatment plan aren\u2019t reducing your symptoms<\/li><\/ul><p style=\"text-align: center;\"><a title=\"Feno Testing\" href=\"https:\/\/aafa.org\/wp-content\/uploads\/2022\/08\/feno-tests-to-monitor-feno-levels.pdf\" target=\"_blank\" rel=\"noopener\">Download, Print, Share This Guide<\/a><\/p><p style=\"text-align: center;\"><a title=\"FeNO-testing-handout-thumbnail250\" href=\"https:\/\/aafa.org\/wp-content\/uploads\/2022\/08\/feno-tests-to-monitor-feno-levels.pdf\" target=\"_blank\" rel=\"noopener\"><img class=\"inline-attachment\" style=\"height: 324px; width: 250px;\" src=\"https:\/\/aafa.org\/wp-content\/uploads\/2022\/08\/feno-testing-handout-thumbnail250.png\" alt=\"FeNO-testing-handout-thumbnail250\" \/><\/a><\/p><p><em>Made possible in part through a partnership with Circassia Pharmaceuticals.<\/em><\/p><p><small><a title=\"Medical Science Council\" href=\"\/about-aafa\/leadership\/medical-science-council\/\" target=\"_blank\" rel=\"noopener\">Medical Review<\/a> August 2017.<\/small><\/p><\/div><p>[\/et_pb_text] [\/et_pb_column] [et_pb_column type=\"1_3\" _builder_version=\"4.17.4\" _module_preset=\"default\" custom_padding=\"6%||||false|false\" global_colors_info=\"{}\"][et_pb_video src=\"https:\/\/www.youtube.com\/watch?v=aSBUDSqXUks&list=PLrLBy23tjd-J7OzSmi6pn1nssfDcCsHob&index=11\" admin_label=\"YouTube Video\" _builder_version=\"4.17.4\" _module_preset=\"default\" global_colors_info=\"{}\"][\/et_pb_video][et_pb_button button_url=\"\/asthma-allergy-research\/asthma-research\/\" button_text=\"Asthma Research\" button_alignment=\"center\" admin_label=\"Asthma Research Button\" _builder_version=\"4.17.4\" _module_preset=\"default\" custom_button=\"on\" button_use_icon=\"off\" custom_css_main_element=\"width:100%;\" global_module=\"613\" global_colors_info=\"{}\"][\/et_pb_button][et_pb_button button_url=\"\/asthma-allergy-research\/allergy-research\/\" button_text=\"Allergy Research\" button_alignment=\"center\" admin_label=\"Allergy Research Button\" _builder_version=\"4.17.4\" _module_preset=\"default\" custom_button=\"on\" button_bg_color=\"#008c99\" custom_css_main_element=\"width:100%;\" global_module=\"598\" saved_tabs=\"all\" global_colors_info=\"{}\" button_text__hover_enabled=\"off|desktop\"][\/et_pb_button][et_pb_text admin_label=\"Support Our Work Blurb\" module_class=\"sidebar-blurb\" _builder_version=\"4.17.4\" _module_preset=\"default\" text_text_color=\"#505050\" text_font_size=\"16px\" text_line_height=\"1.5em\" link_font=\"|600||on|||||\" link_text_align=\"left\" link_text_color=\"#692d87\" link_font_size=\"16px\" header_4_font=\"|600|||||||\" header_4_text_align=\"left\" header_4_text_color=\"#692d87\" header_4_font_size=\"20px\" background_image=\"2725\" background_size=\"initial\" background_position=\"top_left\" global_module=\"601\" saved_tabs=\"all\" global_colors_info=\"{}\"]<\/p><h4>Support Our Work<\/h4><p>Over the past 15 years, there have been moderate advances in U.S. public policy, health care and research, but racial gaps in asthma outcomes have not changed. Minority groups continue to bear disproportionate hardship in managing asthma.<\/p><p><a href=\"\/get-involved\/make-a-donation\/\" target=\"_blank\" rel=\"noopener\">Donate Today ><\/a><\/p><p>[\/et_pb_text][\/et_pb_column][\/et_pb_row][\/et_pb_section]<\/p>","_et_gb_content_width":"","footnotes":"","_links_to":"","_links_to_target":""},"class_list":["post-4073","page","type-page","status-publish","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v28.5 (Yoast SEO v28.5) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Using a FeNO Test to Diagnose Asthma | AAFA.org<\/title>\n<meta name=\"description\" content=\"A FeNO test measures the amount of inflammation in your lungs to help your doctor diagnose asthma. 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