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An invasive cardiopulmonary exercise test or iCPET is an invasive cardiopulmonary exercise test used to measure a number of factors including exertion intolerance and exercise capacity.
two-day cardiopulmonary exercise test (CPET) - A diagnostic test which involves testing an ME/CFS patient exercising on an exercise machine, while monitoring their respiration, especially oxygen consumption. This test is repeated the following day in order to confirm the patient's inability to replicate the first-day performance. This test is thought to be the most objective way to detect post-exertional malaise.
