The lactate dehydrogenase (LDH) test looks for signs of damage to the body’s tissues. LDH is an enzyme found in almost every cell of your body, including your blood, muscles, brain, kidneys, and pancreas.
Doctors normally measure LDH levels in the blood. In some conditions, doctors may measure LDH levels in the urine or cerebrospinal fluid (CSF).
Age Normal LDH level
0 to 10 days 290–2000 U/L
10 days to 2 years 180–430 U/L
2 to 12 years 110–295 U/L
Older than 12 years 100–190 U/L
