Liver & pancreas

LDH unit converter

Lactate dehydrogenase (tissue damage enzyme)

Also known as: LD, Lactate dehydrogenase, Lactic dehydrogenase, Laktatdehydrogenase, Lactate déshydrogénase, Lactato deshidrogenasa

Converter

Enter a value in any unit and all other units fill in.

µkat/L U/L

Worked example

172.5 U/L (middle of the reference range) = 2.88 µkat/L

Conversion formulas

µkat/L	µkat/L = U/L × 0.01667	U/L = µkat/L × 60

Reference range

Unit	Adults
µkat/L	2.083 – 3.667
U/L	125 – 220

Source: MedlinePlus (NLM): Lactate dehydrogenase test · Last reviewed: 2026-10-14

Note from the source: 125-220 IU/L; laboratory methods differ (MedlinePlus)

Frequently asked questions

How do I convert LDH from U/L to µkat/L?

µkat/L = U/L × 0.01667. In the other direction: U/L = µkat/L × 60.

What is the reference range of LDH?

For adults the range is 125 – 220 U/L (MedlinePlus (NLM): Lactate dehydrogenase test). Reference ranges differ between laboratories and partly by sex and age; use the range printed on your lab report.

Which units are used for LDH?

Common units are µkat/L, U/L.