What is the American Thoracic Society standard for volumetric accuracy of spirometers?
A) ±1% error, or within 10 ml of the reference value
B) ±3% error, or within 50 ml of the reference value
C) ±5% error, or within 100 ml of the reference value
D) ±10% error, or within 500 ml of the reference value

Question

Quizplus · Accepted Answer

When measuring the vital capacity, forced vital capacity, and forced expiratory volumes, a volume-measuring spirometer should have a capacity of at least 8 L and should measure volumes with less than a 3% error or within 50 ml of a reference value, whichever is greater.

What Is the American Thoracic Society Standard for Volumetric Accuracy