No. In order to buy a CPAP machine, you must have results from a sleep study and a CPAP prescription from your doctor or healthcare professional. The reason for this is that CPAP devices are a class II medical device under FDA regulation, meaning you require a prescription in order to obtain one, and in order to get the prescription, you need to undergo a sleep study and have a board-certified sleep specialist physician interpret your results and prescribe CPAP treatment before you undergo CPAP therapy.