Check the specs or a pro review that goes into more detail about the panel. The majority have it no matter what bit depth they are. If it doesn't say in specs, it most likely does. You may not be able to see it but this explains how you could.
http://www.lagom.nl/lcd-test/black.php With better frc, the only way would be with equipment a normal person has never heard of. What's the reason for wanting to know?