1、Serum LDH levels are elevated in various diseases and conditions, such as myocardial infarction.血清乳酸脱氢酶水平在各种疾病和情况下升高，例如心肌梗塞。

2、LDH is an enzyme that plays a key role in energy production in cells.乳酸脱氢酶是细胞能量生产中起关键作用的酶。