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Maximal Voluntary Ventilation (MVV)

Published: August 9, 2026Updated: August 16, 2026

A breathing test that measures the greatest amount of air you can deliberately move through your lungs during a short, forceful effort.

Quick summary

["MVV helps assess how effectively your lungs and breathing muscles generate and sustain rapid airflow."]

Medically reviewed by WellAlly Editorial TeamLast reviewed August 16, 2026Editorial policy

Key facts at a glance

LOINC
79913-0
Short code
MV Vmax dias
Synonyms
MV Vmax dias
Category
liver
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
us-doppler
Specimen volume
5 mL
Stability
Room temperature: 4h, Refrigerated: 24h, Frozen: 7d
Hemolysis max
500
Lipemia max
1000
Icterus max
500
TAT
4–24 hours
Order
routine

What is this test?

Maximal voluntary ventilation, or MVV, measures how much air you can breathe in and out during the fastest, strongest breathing effort you can sustain. It is commonly performed with a spirometer and requires close cooperation.

Why might I need this test?

MVV may be used to assess breathing-muscle strength and the ability to move air through the airways. It may be part of pulmonary function testing for symptoms such as shortness of breath, wheezing, or reduced exercise tolerance.

How is the test performed?

You will sit upright and breathe through a mouthpiece connected to the testing equipment. Following the technician's instructions, you will make repeated deep, fast, forceful efforts to inhale and exhale as much air as possible.

How do I prepare for the test?

Fasting is usually not required, but follow your clinic's specific instructions. Tell the care team about breathing problems, recent chest pain, dizziness, or any condition that could make forceful breathing unsafe.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

A lower-than-expected MVV can occur with weakened breathing muscles or conditions that limit airflow. Results may also be reduced by poor effort, unfamiliarity with the maneuver, pain, or other temporary factors, so they are interpreted alongside other pulmonary function tests and medical findings.

Short name

MVV breathing test

Frequently asked questions

Is the MVV test the same as spirometry?
It is part of pulmonary function testing and uses similar equipment, but MVV requires sustained, rapid, maximal breathing efforts rather than the standard forced-expiration maneuvers used in spirometry.
Does an abnormal MVV result mean I have a lung disease?
Not by itself. A reduced result may reflect lung disease, breathing-muscle weakness, or an inability to perform the maneuver correctly, so the clinician will interpret it with your symptoms and other test results.
Can I take my usual medicines before the test?
Usually, but ask the testing clinic whether any medicines should be withheld or adjusted. Bring your medicine list and tell the technician if you have recently used an inhaler or other breathing treatment.
  1. 1
    MedlinePlus — Laboratory TestsSource
  2. 2
    Lab Tests OnlineSource
  3. 3
    Mayo Clinic — Tests & ProceduresSource

Click any link to access the full source. PubMed Central (PMC) links provide free full-text access.

This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.

Medical Disclaimer

This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.

If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.

Medically reviewed by WellAlly Editorial Team Last reviewed August 16, 2026. · Read our editorial policy