Sleep apnea is a sleep disorder that can already be diagnosed in the comfort of a person's home. That is due to the fact that home sleep tests (HSTs) have already been invented. They are portable products that initially diagnose sleep apnea by using the principle used in traditional sleep study test. Since the test is conducted at home, people who will use an OSA home test should make sure that the device is properly used. One is that the chest belt should be just tight enough so that they still feel comfortable. The prongs of the cannula should be placed on the nostrils facing up. It's tubing should be pulled up and placed behind the ears and should end on their chin. For other considerations that people might need, this site can help.