As of Oct. 3, 2026, MyChart is now your new online health record at Children’s Minnesota. Learn more and activate your account now.

Patient & Family Education Materials

Start over with a New Search

Definition: Lung Function Tests

Lung Function Tests

The term "lung function" refers to how well a person is breathing. There are several tests that help doctors find out how good a person's lung function is and determine whether the person has asthma. One of these tests, called a spirometry test, involves taking a breath and then blowing the air out as fast and as long as possible. Lung function tests can help a doctor find out if someone has asthma.

Back To Top

Note: All information is for educational purposes only. For specific medical advice, diagnoses, and treatment, consult your doctor.

© 1995-2026 KidsHealth ® All rights reserved. Images provided by iStock, Getty Images, Corbis, Veer, Science Photo Library, Science Source Images, Shutterstock, and Clipart.com

MyChart is here! MyChart Epic Systems Corporattion.

MyChart is here

Managing your child’s health care is easier with MyChart, your secure online health record at Children’s Minnesota. Set up and activate your Children’s Minnesota MyChart account.

Give to Kids Day

Today is Give to Kids Day!

A day for our generous community to join together to ensure that even the tiniest hearts get the strongest possible start.