Write down the number you get for each peak flow reading.

See below for more on how to take your peak flow.

You and your child will learn to measure peak flow at home.

Have a peak flow that is near your personal best (or better).

Usually the idea is to control peak flow for later release.

The highest peak flow number you had during the 2 to 3 weeks is your personal best.

Peak flow meters have been around for a long period of time.

It is important to use the same peak flow meter every time.

It's a good idea to start using peak flow meters before age 5 to get the child used to them.

That was up from $338 million in December, but well below the peak flows of last spring.

Peak flow is a measure of how open your airways are.

Knowing how to use a peak flow meter is very important.

Based on peak flow measures, an action plan shows you what medicines to take and when.

An asthma action plan tells you how to check your peak flow.

The action plan is based on peak flow and asthma symptoms.

For example, if you are not comfortable using a peak flow meter, tell your doctor.

Central to this is the use of a home device known as a peak flow meter.

An action plan has zones that are based on your peak flow or symptoms.

Children under age 5 may not be able to use a peak flow meter well enough to make the numbers useful.

Even children ages 4 and up should be able to use a peak flow meter with good results.

Peak flow measurements can help show when medication is needed, or other action needs to be taken.

A peak flow meter measures how open your airways are.

Checking "peak flow" is one of the best ways to control asthma.

Peak flow is interpreted in color zones, similar to a traffic light.

An action plan may include: The peak flow readings and symptoms for each zone.