A tool used to diagnose<unk>  is the six-minute walk test, (6MWT), wherein a patient walks at a normal pace for six minutes, in order to monitor their physiological response. It has been proven that, after performing the 6MWT, COVID-19 patients were more likely to develop exercise-induced hypoxia symptoms than non-COVID-19 patients who suffered from idiopathic pulmonary fibrosis. The condition can also be first detected by using prehospital pulse oximetry.
Silent hypoxia
Cerebral hypoxia
Histotoxic hypoxia
Pseudohypoxia
Intermittent hypoxia
Hypoxia 
Hyperoxia
Anoxia