<prompt> Which of the following tests is gold standard to diagnose a case of PHN?HAMS testSucrose lysine testFlow cytometryBone marrow  <response>: Ref. Robbins Pathology. 9th edition. Page. 642Diagnostic methodsHAM test no more usedGel card testFlow cytometry IOCBest FLAER Fluorescent Aerolysin test 