The EI Group, Inc. articles

Effective January 1, 2009, NIOSH has changed the time limits on all NIOSH-Approvedn Pulmonary Function technician certificates to 5 years from the course date. Previously awarded certificates are no longer valid indefinitely. Individuals who choose to have a valid NIOSH certificate must either take a NIOSH-Approved Spirometry Refresher Course before the certificate is invalidated or they must retake the initial Course.

NIOSH-Approved Spirometry Refresher Courses will be offered only to st