Fast Five Quiz: Eosinophilic Asthma

Zab Mosenifar, MD


July 06, 2020

Figure 1. Sputum culture

Although the sputum eosinophilia level is the gold standard for diagnosing EA, this approach is not common because sputum processing and cell counting are too technical for most clinical centers. Nonetheless, there is consensus that a sputum eosinophil level of more than 2%-3% indicates EA. Novel techniques that use other biomarkers are currently in development.

Learn more about sputum and EA.


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