Apnix Sleep Diagnostics has been Houston’s sleep center for diagnostics and treatments of choice for more than 25,000 patient ... s over the past 12 years. Our eight Houston area locations provide patients with resources to sleep diagnostics, sleep apnea testing, sleep treatments and snoring relief. Common disorders treated by Apnix Sleep Diagnostics are: restless leg syndrome, insomnia, snoring and sleep apnea. We also carry a full line of CPAP and BiPAP supplies. read more