Which lab studies are indicated in the assessment and diagnosis of asthma?

Updated: Jan 07, 2019
  • Author: Michael J Morris, MD, FACP, FCCP; Chief Editor: Zab Mosenifar, MD, FACP, FCCP  more...
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Answer

Laboratory assessments and studies are not routinely indicated for the diagnosis of asthma, but they may be used to exclude other diagnoses. Eosinophilia and elevated serum IgE levels may help guide therapy in some cases. Arterial blood gases and pulse oximetry are valuable for assessing severity of exacerbations and following response to treatment.


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