Flipped LDH indicating Myocardial Infarction is represented by:

When LDH-1 is greater than LDH-2, it is referred to as flipped LDH and is indicative of MI. LDH-1 isoenzyme is found primarily in hea muscle and is lesser in concentration than the LDH-2 Isoenzyme which is primarily found in RBC. When the concentration of LDH-1 is observed to be greater than LDH2. It is referred to as flipped LDH and is indicative of Myocardial infarction. LDH has five isoenzymes: LDH-1 LDH-1 is found primarily in hea muscle 17% to 27% LDH-2 LDH-2 is primarily found in Red blood cells 27% to 37% LDH-3 LDH-3 is highest in the lung 18% to 25% LDH-4 LDH-4 is highest in the kidney, placenta, and pancreas 3% to 8% LDH-5 LDH-5 is highest in the liver and skeletal muscle 0% to 5% The LDH test helps determine the location of tissue damage. Thus in Normal ratios LDH-1 is less than LDH-2 and LDH-5 is less than LDH-4. When LDH-1 is greater than LDH-2: It is referred to as flipped LDH. It is indicative of MI. When your LDH-5 is greater than your LDH-4: It could mean damage to the liver or liver disease. This includes cirrhosis and hepatitis. Ref: Harrisons 19th edition