The effort-independent portion of an FVC consists the last 70% to 80% of the FVC maneuver.

Name: The effort-independent portion of an FVC consists the last 70% to 80% of the FVC maneuver.
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Quizplus · Accepted Answer

This is true. The effort-independent portion of an FVC refers to the part of the maneuver where the remaining air is exhaled after the effort-dependent portion, and it typically makes up the last 70% to 80% of the total FVC.

The Effort-Independent Portion of an FVC Consists the Last 70