Normal values for Forced Vital Capacity (FVC), Forced Expiratory Volume in 1 Second (FEV1) and Forced Expiratory Flow 25–75% (FEF25–75%).
<p>Y-axis is expressed in Litres for FVC and FEV1, and in Litres/second for FEF25–75%.
<i>See main article: <a href="https://en.wikipedia.org/wiki/Spirometry" class="extiw" title="wikipedia:Spirometry">Wikipedia:Spirometry</a></i>
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<h2><span class="mw-headline" id="Reference">Reference</span></h2>
<ul><li><cite style="font-style:normal">Stanojevic S, Wade A, Stocks J, <i>et al.</i> (February 2008). "<a rel="nofollow" class="external text" href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2643211">Reference ranges for spirometry across all ages: a new approach</a>". <i>Am. J. Respir. Crit. Care Med.</i> <b>177</b> (3): 253–60. <a href="https://en.wikipedia.org/wiki/Digital_object_identifier" class="extiw" title="w:Digital object identifier">DOI</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1164/rccm.200708-1248OC">10.1164/rccm.200708-1248OC</a>. <a href="https://en.wikipedia.org/wiki/PMID" class="extiw" title="w:PMID">PMID</a> <a rel="nofollow" class="external text" href="https://www.ncbi.nlm.nih.gov/pubmed/18006882">18006882</a>. <a href="https://en.wikipedia.org/wiki/PubMed_Central" class="extiw" title="w:PubMed Central">PMC</a>: <a rel="nofollow" class="external text" href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2643211">2643211</a>.</cite></li></ul>
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<p><span class="int-own-work" lang="en">Own work</span>
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