But the big VR players are still working out motion tracking. When you look down with a VR headset on the first thing you want to do is see your hands in a virtual space. For a while, we've seen the Leap Motion accessory - which uses an infrared sensor to track hand movements - strapped to the front of Oculus dev kits.
Urine specimens should not remain unrefrigerated for longer than two hours. Aurine specimen that cannot be delivered to a laboratory within two hours should be stored in a refrigerator. The reason for this precaution is that urinesamples undergo chemical changes at room temperature.
According to Cornell University, a urine specimen can be held for up to twelve hours, providing that it has been refrigerated. In addition to time restraints, temperature of the urine can also play a critical role in the end test result. Refrigerated specimens must be allowed to become room temperature before testing.