The Alice PDx portable diagnostic recording device is intended for Obstructive Sleep Apnea screening, follow-up and diagnostic assessment of cardio-respiratory sleep disorders.The flexible and portable sleep testing system incorporates advanced features required to meet today's industry needs. It's compact size is perfect for home sleep testing needs while providing capabilities of basic screening to advanced diagnostic evaluation. The system satisfies the portable testing requirements for levels II, III and IV. The Alice PDx enables patients to be tested outside of the lab – and in the comfort of their own home - without compromising study results, and helps clinicians avoid the costs associated with retesting.