<prompt> Most sensitive test for carpal tunnel syndrome -Phalens testTinels signTourniquet testNone  <response>: Phalen;s test wrist flexion : the patient is asked to actively place the wrist in complete but unforced flexion . If tingling numbness are produced in median nerve distribution of the hand within 60 seconds , the test is positive . it is the most sensitive provocative test , has a specificity of 80. Tinel ;s sign - to record the rate of regeneration of nerve clinically . Tourniquet test : a pneumatic BP cuff is applied proximal to elbow inflated higher than the patient;s systolic BP .The test is positive if there is parasthesia or numbness in region of median nerve distribution of the hand . Is less reliable is specific in 65 cases. median nerve percussion test : tap the median nerve at the wrist gently ,test is positive if there is tingling sensation .seen in 45 cases only median nerve compression test : direct pressure over both wrist by examiner .first phase of test is time taken for symptoms to appear 15 sec- 2min .the second phase is the time taken for symptoms to disappear after the release. REF:textbook of ohopedics, John Ebenezer, 4th edition , pg.no.394 