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Pulmonary Function Testing

Pulmonary function tests are non-invasive diagnostic tests that provide important information about how well your lungs are working. The results can help your doctor diagnose and monitor the treatment of certain lung disorders.

Your doctor may refer you for a pulmonary function test to:

  • Enable early identification and intervention of COPD
  • Document the progression of pulmonary disease
  • Investigate a history of smoking coughs or wheezing
  • Screen for the presence of obstructive and restrictive lung diseases
  • Evaluate you prior to surgery
  • Document the effect of therapeutic intervention
  • Assess neuromuscular restrictive lung disease
  • Evaluate the effects of radiation for treatment of cancer
  • Assess the presence of asthma or reactive airway disease.

Available services

Trios Health offers a variety of pulmonary function testing services:

  • Complete diagnostic study including pre- and post-bronchodilator spirometry, total lung volumes/thoracic gas volumes, airway resistance, MVV, and diffusion test (DLCO)
  • Pre- and post-bronchodilator studies
  • Methacholine inhalation challenge test for asthma/reactive airway diagnosis (special preparation required)
  • Asthma and chronic obstructive pulmonary disease (COPD) education.

Preparing for Your Appointment

Scheduling Your Pulmonary Function Test

A referral from your provider is required. Once you have this referral, call 509-221-5441 to schedule your appointment. You will be provided with instructions on preparing for your test at that time.

Where to Go

Your pulmonary function test will be completed in our Pulmonary Function Lab located at:

Trios Care Center at Southridge

3730 Plaza Way
Kennewick, WA 99338
Map | Driving directions

What to Bring

Please provide Trios staff with the following during the pre-registration process:

  • Copies of any printed orders from your provider
  • List of current medications
  • Your insurance card
  • Valid photo identification.

When you arrive for your appointment, please check in at the front desk, and then proceed to the Central Registration waiting area. Your name will be called for pre-registration.

During and After Your Test

Pulmonary function tests take approximately 45 minutes to 2 hours, depending on the kind of test requested by your provider. During the test, you will sit inside a clear-sided chamber and follow instructions from a pulmonary function specialist.

Once completed, your test results will be interpreted by a pulmonologist within 72 hours and a final report will be available to your provider.

Are You a Smoker or Former Smoker?

The National Lung Health Education Program recommends pulmonary function testing for all adults age 45 or older who smoke cigarettes or have quit during the previous year.

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