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Home > Patient & Family Resources > Health Library > Challenge Tests for Asthma
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Exercise challenge and inhalation challenge tests are sometimes used to diagnose asthma and workplace asthma (occupational asthma).
In an exercise challenge test, spirometry is done before and after you exercise on a treadmill or an exercise bicycle. Spirometry measures how much and how quickly you can breathe air in and out. An exercise challenge test can see what effect exercise has on airflow.
Most people with asthma have some decreased airflow during or after exercise. But most people who have asthma do not need an exercise challenge test.
An inhalation challenge test measures how much and how quickly you can breathe air in and out before and after taking medicine. Spirometry may be done before and after you are given an inhaled medicine, such as methacholine or histamine, or after breathing cold air. The test may be repeated for different doses of the medicine.
An inhalation challenge test is rarely needed to diagnose asthma. But it may be used to:
You may also have a specific inhalation challenge. In this test, your doctor exposes you to a small amount of the material that may be causing your symptoms and then measures your lung function.
Current as of:
July 6, 2021
Author: Healthwise StaffMedical Review: E. Gregory Thompson MD - Internal MedicineAdam Husney MD - Family MedicineElizabeth T. Russo MD - Internal Medicine
Current as of: July 6, 2021
Author: Healthwise Staff
Medical Review:E. Gregory Thompson MD - Internal Medicine & Adam Husney MD - Family Medicine & Elizabeth T. Russo MD - Internal Medicine
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