{"id":115,"date":"2022-08-08T01:38:17","date_gmt":"2022-08-08T05:38:17","guid":{"rendered":"https:\/\/aafa.org\/?page_id=115"},"modified":"2025-09-04T12:46:15","modified_gmt":"2025-09-04T16:46:15","slug":"lung-function-tests-diagnose-asthma","status":"publish","type":"page","link":"https:\/\/aafa.org\/asthma\/asthma-diagnosis\/lung-function-tests-diagnose-asthma\/","title":{"rendered":"Lung Function Tests"},"content":{"rendered":"

[et_pb_section fb_built=”1″ admin_label=”Asthma T-Hero Section” module_class=”hero tert” _builder_version=”4.18.0″ _module_preset=”default” background_image=”https:\/\/aafa.org\/wp-content\/uploads\/2022\/07\/AAFA-Website_Tertiary_Asthma.jpg” background_position=”top_right” custom_padding=”1%||1%||true|false” global_module=”2247″ saved_tabs=”all” collapsed=”on” global_colors_info=”{}”][et_pb_row _builder_version=”4.17.4″ _module_preset=”default” background_enable_image=”off” background_size=”initial” background_position=”bottom_left” background_horizontal_offset=”0%” custom_margin=”||||false|false” custom_padding=”2%||0px||false|false” global_colors_info=”{}”][et_pb_column type=”4_4″ _builder_version=”4.17.4″ _module_preset=”default” global_colors_info=”{}”][et_pb_text admin_label=”Nav Parent Title” module_class=”tert-parent” _builder_version=”4.17.4″ _module_preset=”default” header_2_font=”|600|||||||” header_2_text_align=”left” header_2_text_color=”#FFFFFF” header_2_font_size=”32px” custom_margin=”||0px||false|false” global_colors_info=”{}”]<\/p>\n

Asthma<\/h2>\n

[\/et_pb_text][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=”{}”][\/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=”H2 + Intro Content” module_class=”secondary-intro” _builder_version=”4.18.0″ _module_preset=”default” text_text_color=”#505050″ text_font_size=”28px” 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>\n

Lung Function Tests<\/h2>\n

Lung function tests measure your breathing to help your doctor or health care provider diagnose and monitor asthma. There are different types of lung functions tests.<\/p>\n

[\/et_pb_text][et_pb_text admin_label=”Page Content” module_class=”secondary-intro” _builder_version=”4.24.2″ _module_preset=”default” text_text_color=”#505050″ 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>\n

Your doctor may use a combination of tests to help confirm an asthma diagnosis. Lung function tests can also help them tell if your asthma medicines are working.<\/p>\n

Types of Lung Function Tests<\/h3>\n

Lung function tests are often done before and after inhaling a medicine known as a bronchodilator (brahn-ko-DIE-lay-tor), which opens your airways. If your lung function improves a lot after a bronchodilator, you probably have asthma.<\/p>\n

Most lung function tests require you to exhale or inhale using a device or a mouthpiece connected to a device. They are simple tests that are often done in the doctor\u2019s office. Your doctor may ask you to stop taking certain medicines before your appointment.<\/p>\n

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\"SpirometrySpirometry<\/a>. <\/strong>This is the recommended test to confirm asthma. During this test, you breathe into a mouthpiece that\u2019s connected to a device, called a spirometer, or to a laptop. It measures the amount of air you\u2019re able to breathe in and out and its rate of flow. You will take a deep breath and then exhale forcefully.<\/p>\n

[\/et_pb_text][et_pb_text admin_label=”Peak Flow Meter \/ IMG Left Aligned” module_id=”download” _builder_version=”4.19.0″ _module_preset=”default” text_text_color=”#505050″ custom_margin=”||0px||false|false” custom_padding=”2%||1%||false|false” global_colors_info=”{}”]<\/p>\n

\"PeakPeak flow meter<\/a>. <\/strong>This test uses a peak flow meter. It\u2019s a small, handheld device that you breathe into to measure the rate at which you can force air out of your lungs. During the test, you breathe in as deeply as you can and then blow into the device as hard and fast as possible. If you\u2019re diagnosed with asthma, you can use a peak flow meter at home to help track your condition. But a peak flow meter cannot be used to diagnose asthma.<\/p>\n

[\/et_pb_text][et_pb_text admin_label=”FeNO Test \/ IMG Left Aligned” module_id=”download” _builder_version=”4.19.0″ _module_preset=”default” text_text_color=”#505050″ custom_margin=”||0px||false|false” custom_padding=”2%||1%||false|false” global_colors_info=”{}”]<\/p>\n

\"FenoFeNO test<\/a>.<\/strong> A FeNO test \u2013 also called exhaled nitric oxide testing \u2013 measures the amount of inflammation in your lungs. When you have asthma, your airways become inflamed and produce nitric oxide. This test can tell a doctor how much inflammation is in your airways by measuring the amount of nitric oxide.<\/p>\n

[\/et_pb_text][et_pb_text admin_label=”Provocation Test \/ IMG Left Aligned” module_id=”download” _builder_version=”4.19.0″ _module_preset=”default” text_text_color=”#505050″ custom_margin=”||0px||false|false” custom_padding=”2%||1%||false|false” global_colors_info=”{}”]<\/p>\n

\"ProvocationProvocation tests<\/a>.<\/strong> If your other results are normal but you\u2019ve been experiencing signs and symptoms of asthma, your doctor may order a test that produces a mild reaction under controlled laboratory conditions. If you don\u2019t have asthma, you won\u2019t react to the low doses those with asthma will react to.<\/p>\n

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These lung function tests are some of the most common types used. There are also other types of lung function tests your doctor may use to diagnose and manage your asthma, depending on age, symptoms, medical history and more.<\/p>\n

How Do I Know If I Need a Lung Function Test?<\/h3>\n

If you have symptoms of asthma<\/a>, see a board-certified allergist or pulmonologist. Based on your symptoms and medical history, they will talk with you if you need any lung function tests.<\/p>\n

[\/et_pb_text][et_pb_text admin_label=”Medical Review” _builder_version=”4.19.0″ _module_preset=”default” text_text_color=”#505050″ text_font_size=”16px” link_text_color=”#008C99″ link_font_size=”16px” header_5_font=”|600|||||||” header_5_text_align=”left” header_5_text_color=”#008c99″ custom_margin=”||3%||false|false” global_colors_info=”{}”]<\/p>\n

Medical Review:<\/a> December 2017 by Sumita Khatri, MD, MS, and Maureen George, PhD, RN, AEC, FAAN<\/small><\/p>\n

[\/et_pb_text][et_pb_code admin_label=”Print” module_id=”print” module_class=”clearfix” _builder_version=”4.17.6″ _module_preset=”default” global_module=”5156″ saved_tabs=”all” global_colors_info=”{}”]<\/svg> Print post<\/a> [\/et_pb_code][\/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=D0HvxftFDrU” admin_label=”YouTube Video” _builder_version=”4.18.0″ _module_preset=”default” global_colors_info=”{}”][\/et_pb_video][et_pb_button button_url=”\/asthma\/” button_text=”Asthma Resources” button_alignment=”center” admin_label=”Asthma Resources Button” _builder_version=”4.18.0″ _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_text admin_label=”Asthma Care for Adults” module_class=”aca-sb” _builder_version=”4.19.0″ _module_preset=”default” text_text_color=”#505050″ text_font_size=”16px” text_line_height=”1.4em” link_font=”||||on|||#008c99|” link_text_color=”#008c99″ link_font_size=”16px” link_line_height=”1.4em” ul_line_height=”1.7em” header_2_font=”|600|||||||” header_2_text_color=”#008c99″ header_2_font_size=”39px” header_3_font=”|600|||||||” header_3_text_align=”left” header_3_text_color=”#008c99″ header_3_font_size=”28px” background_color=”RGBA(255,255,255,0)” custom_padding=”0%|0%|0%|0%|true|true” global_module=”5087″ saved_tabs=”all” global_colors_info=”{}”]<\/p>\n

\"Asthma<\/a>
\nKnowing how to manage asthma is important for better health and quality of life. We offer an online course called 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

[\/et_pb_text][\/et_pb_column][\/et_pb_row][\/et_pb_section][et_pb_section fb_built=”1″ admin_label=”Blog Feed Section – Asthma” module_class=”int-blog-ftr” _builder_version=”4.18.0″ _module_preset=”default” background_color=”#F5EDDF” custom_margin=”||||false|false” custom_padding=”2%||2%||false|false” top_divider_color=”#28BDBA” top_divider_flip=”horizontal” bottom_divider_color=”#28BDBA” bottom_divider_height=”50px” bottom_divider_arrangement=”above_content” global_module=”9020″ saved_tabs=”all” collapsed=”off” global_colors_info=”{}”][et_pb_row _builder_version=”4.18.0″ _module_preset=”default” custom_margin=”0px||0px||false|false” custom_padding=”0px||0px||false|false” global_colors_info=”{}”][et_pb_column type=”4_4″ _builder_version=”4.18.0″ _module_preset=”default” global_colors_info=”{}”][\/et_pb_column][\/et_pb_row][et_pb_row column_structure=”1_3,1_3,1_3″ use_custom_gutter=”on” gutter_width=”2″ disabled_on=”off|off|off” _builder_version=”4.18.0″ _module_preset=”default” custom_padding=”||1%||false|false” global_colors_info=”{}”][et_pb_column type=”1_3″ _builder_version=”4.17.4″ _module_preset=”default” global_colors_info=”{}”][et_pb_image src=”https:\/\/aafa.org\/wp-content\/uploads\/2025\/04\/NACP-position-statement-BT-1.jpg” alt=”Chick-fil-A product change alert” title_text=”NACP-position-statement-BT” url=”https:\/\/community.aafa.org\/blog\/cdc-nacp-asthma-program-gone” show_bottom_space=”off” align=”center” _builder_version=”4.27.4″ _module_preset=”default” background_enable_image=”off” width=”100%” custom_margin=”0px||0px||false|false” custom_padding=”0px||0px||false|false” global_colors_info=”{}”][\/et_pb_image][et_pb_text admin_label=”Blog Link Text” _builder_version=”4.27.4″ _module_preset=”default” text_font=”|600|||||||” text_text_color=”#28BDBA” text_font_size=”16px” text_line_height=”1.6em” link_font=”|600|||||||” link_text_align=”left” link_text_color=”#28BDBA” link_font_size=”16px” link_line_height=”1.6em” background_color=”#FFFFFF” height=”105px” custom_padding=”5%|4%|4%|8%|false|false” global_colors_info=”{}” text_text_color__hover_enabled=”on|hover” text_text_color__hover=”#28BDBA” link_text_color__hover_enabled=”on|hover” link_text_color__hover=”#692D87″]<\/p>\n

The CDC Asthma Program Is Gone<\/a><\/p>\n

[\/et_pb_text][\/et_pb_column][et_pb_column type=”1_3″ _builder_version=”4.17.4″ _module_preset=”default” global_colors_info=”{}”][et_pb_image src=”https:\/\/aafa.org\/wp-content\/uploads\/2025\/01\/inhaler-price-cap-announcement-AZ-BT.jpg” alt=”Various asthma medicines and inhalant equipment” title_text=”inhaler-price-cap-announcement-AZ-BT” url=”https:\/\/community.aafa.org\/blog\/what-you-need-to-know-about-the-35-price-cap-on-asthma-inhalers” show_bottom_space=”off” align=”center” _builder_version=”4.27.4″ _module_preset=”default” background_enable_image=”off” width=”100%” custom_margin=”0px||0px||false|false” custom_padding=”0px||0px||false|false” global_colors_info=”{}”][\/et_pb_image][et_pb_text admin_label=”Blog Link Text” _builder_version=”4.27.4″ _module_preset=”default” text_font=”|600|||||||” text_text_color=”#28BDBA” text_font_size=”16px” text_line_height=”1.6em” link_font=”|600|||||||” link_text_align=”left” link_text_color=”#28BDBA” link_font_size=”16px” link_line_height=”1.6em” background_color=”#FFFFFF” height=”105px” custom_padding=”5%|4%|4%|8%|false|false” global_colors_info=”{}” text_text_color__hover_enabled=”on|hover” text_text_color__hover=”#28BDBA” link_text_color__hover_enabled=”on|hover” link_text_color__hover=”#692D87″]<\/p>\n

What You Need to Know About the $35 Price Cap on Asthma Inhalers<\/a><\/p>\n

[\/et_pb_text][\/et_pb_column][et_pb_column type=”1_3″ _builder_version=”4.17.4″ _module_preset=”default” global_colors_info=”{}”][et_pb_image src=”https:\/\/aafa.org\/wp-content\/uploads\/2024\/02\/brand-name-vs-generic-difference-BT.png” alt=”Milk Allergy Alert” title_text=”brand-name-vs-generic-difference-BT” url=”https:\/\/community.aafa.org\/blog\/difference-brand-name-generic-authorized-generic-authorized-generic-drugs” show_bottom_space=”off” align=”center” _builder_version=”4.27.4″ _module_preset=”default” background_enable_image=”off” width=”100%” custom_margin=”0px||0px||false|false” custom_padding=”0px||0px||false|false” global_colors_info=”{}”][\/et_pb_image][et_pb_text admin_label=”Blog Link Text” _builder_version=”4.24.0″ _module_preset=”default” text_font=”|600|||||||” text_text_color=”#28BDBA” text_font_size=”16px” text_line_height=”1.6em” link_font=”|600|||||||” link_text_align=”left” link_text_color=”#28BDBA” link_font_size=”16px” link_line_height=”1.6em” background_color=”#FFFFFF” height=”105px” custom_padding=”5%|4%|4%|8%|false|false” global_colors_info=”{}” text_text_color__hover_enabled=”on|hover” text_text_color__hover=”#28BDBA” link_text_color__hover_enabled=”on|hover” link_text_color__hover=”#692D87″]<\/p>\n

What\u2019s the Difference Between Brand Name, Generic, and Authorized Generic Drugs?<\/a><\/p>\n

[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row _builder_version=”4.18.0″ _module_preset=”default” custom_margin=”0px||||false|false” custom_padding=”0px||0px||true|false” global_colors_info=”{}”][et_pb_column type=”4_4″ _builder_version=”4.18.0″ _module_preset=”default” global_colors_info=”{}”][et_pb_text admin_label=”View More Link” _builder_version=”4.18.0″ _module_preset=”default” text_text_color=”#008C99″ link_font=”|600||on|||||” link_text_align=”right” link_text_color=”#008C99″ link_font_size=”18px” text_orientation=”right” global_colors_info=”{}” link_text_color__hover_enabled=”on|hover” link_text_color__hover=”#692D87″]<\/p>\n

View more blog articles ><\/a><\/p>\n

[\/et_pb_text][\/et_pb_column][\/et_pb_row][\/et_pb_section]<\/p>\n","protected":false},"excerpt":{"rendered":"

AsthmaLung Function Tests Lung function tests measure your breathing to help your doctor or health care provider diagnose and monitor asthma. There are different types of lung functions tests.Your doctor […]<\/p>\n","protected":false},"author":14,"featured_media":0,"parent":113,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"_et_pb_use_builder":"on","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":"","_links_to":"","_links_to_target":""},"class_list":["post-115","page","type-page","status-publish","hentry"],"acf":[],"yoast_head":"\nLung Function Tests to Diagnose Asthma | AAFA.org<\/title>\n<meta name=\"description\" content=\"Lung function tests measure your breathing to diagnose asthma. 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