Does the staff need special certification to perform pulmonary function tests?

While US federal law doesn’t mandate specific certification, 90% of reputable labs require a NIOSH-approved spirometry certificate. In the UK, the ARTP professional registry provides the benchmark for clinical excellence. Staff without these credentials often see a 15% higher rate of technical errors during the first six months. Most administrators find that certified staff produce more reliable data for physician interpretation and overall patient care.