<prompt> Creatinine kinase is elevated in MI after -2 - 4 hrs.4 - 8 hrs.12 - 24 hrs24 hrs.  <response>: Ans. is a i.e., 2 - 4 hrs Enzyme Initiation of rise Peak Return to baseline CK-MB 2-4 hours 24 hours 48-72 hours Troponin T and I TnT Tnl 2-4 hours 48 hours 7-10 days ASTSGOT In 12 hours 48 hours 4-5 days LDH 24 hours 3-6 days 2 weeks 