There are a few simple tests for diagnosing carpal tunnel syndrome. The first if Phalen’s test and involves flexing the wrists and pressing the backs of the hands together. If there is pain, pins and needles or numbness in the hands or fingers then this may suggest that you have carpal tunnel syndrome. Another test is Tinel’s sign which involves tapping two fingers over the carpal tunnel between the hand and the wrist. If this causes pain, tingling or pins and needles in the hands or fingers it may also be an indication of carpal tunnel syndrome.