Diagnostic Test
Maximal Expiratory Flow Rate
Diagnostics
Overview
The airflow rate measured during the first liter expired after the first 200 ml have been exhausted during a FORCED VITAL CAPACITY determination. Common abbreviations are MEFR, FEF 200-1200, and FEF 0.2-1.2.
This information is general and should not be treated as medical advice. Always speak directly with a qualified healthcare professional before making decisions about treatment, diagnosis, procedures, medicines or care.
Quick facts about Maximal Expiratory Flow Rate
- Topic type
- Diagnostic Test
- Category
- Diagnostics
- MeSH classification
- E01.370.386.700.660.225.500|G09.772.650.300.590
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Source: Medical Subject Headings (MeSH), produced by the U.S. National Library of Medicine. EuroCareFinder is not endorsed by the National Library of Medicine. MeSH version: 2026.