<prompt> Diagnostic test for paroxysmal nocturnal hemoglobinuria is:Sucrose lysis testHam testElevated LDH levelsAnalysis of GPI-linked proteins  <response>: Analysis of GPI-linked proteins 616-H 16th 437-CMDT-2009 661-HI7lhPAROXYSMAL NOCTURNAL HEMOGLOBINURIA -Diagnosis - Macro-ovalocytes, urine hemosiderin, T LDH, Iron deficiency anemia TLC and platelet count decreased Decreased leukocyte alkaline phosphatase Bone marrow-generated hypoplasia or erythroid hyperplasia Flow cytometric assays may confirm the diagnoses by demonstrating the absence of CD59 503-CMDT-07 Ham test acidified serum lysis test and sucrose lysis test Reduction in ionic strength are not reliable 616-H Analysis of GPI-linked protein e.g. CD 59, DAF on RBC and granulocytes by flow cytometry, 616-H 