This place is a joke. Ive been on coap for 8 years. My cardiologist recommended I go for retest. This place made me do tests from start because they said how do we lnow you need coap? I said Ive been on it for 8 years and to own a machine you need a script. They said thats true. Still did basic tests. AHI was 53 apneas per hour. Severe he said. Set pressure at 11 on script. My 8 year old script was 13 and that wasnt enough! They dont know why Im so high.