What Do Peak Flow Readings Tell About an Asthma Patient?

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I am 14 and have been lately told that I have asthma. My peak flow readings are only 200- 300 and the doctors say that I have to get it to rise up to 400. Can anyone tell me what the peak flow readings tell about me? Please help me! I would really be obliged.
asked Jan 13, 2011 by anonymous
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