<prompt> Not a test for Eustachian tube patency ?TympanometryToynbeeValsalvaFrenzel maneuver  <response>: Ans. is a i.e., Tympanometry Tests for Eustachian tubepatency Valsalva test Methylene blue test Sonotubometry Politzer test Toynbee test Frenzel maneuver Catheterization Inflation - Deflation test 