Some patients are getting into trouble because they use the "float test" to see if their metered-dose inhaler is empty

January 2003

Some patients are getting into trouble because they use the "float test" to see if their metered-dose inhaler is empty.

Float tests often give inaccurate results.

Some of the newer canisters (Proventil HFA, etc) actually float when they're FULL.

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Some patients are getting into trouble because they use the "float test" to see if their metered-dose inhaler is empty