The predominant isoenzyme of LDH in the cardiac muscle is?: (A) LDH – 1, (B) LDH – 2, (C) LDH – 3, (D) LDH – 5
Answer is A. In normal plasma LDH-2 is more in concentration than LDH – 1.
In myocardial infarction level of LDH – 1 increases and this leads to altered ratio of LDH.
It means LDH – 1 > LDH – 2.
This altered ratio of the LDH is known as flipped pattern.