Answer
A positive Osmohale (mannitol) challenge test is defined by a fall in FEV₁ of at least 15% from baseline (0 mg dose) or an incremental fall of at least 10% between doses.
Sources for this answer
- Osmohale Inhalation Powder, Hard CapsulePharmaxis Europe Limited · emc · SmPC §4.2 Posology and method of administration · Version 5Document updated
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