For the in vitro quantitative kinetic determination of lactate dehydrogenase activity in serum. For in vitro diagnostic use only.
Lactate dehydrogenase catalyzes the oxidation of lactate to pyruvate with simultaneous reduction of NAD to NADH. The rate of NAD reduction can be measured as an increase in absorbance at 340 nm. This rate is directly proportional to LD activity in serum.