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BCH Order Code LAB96 Lactate Dehydrogenase (LD), Serum

Reporting Title

Lactate Dehydrogenase

Useful For

Lactate dehydrogenase is an enzyme with a widespread tissue distribution within the cytosol of all human cells; it catalyzes the reversible reduction of pyruvate to lactate using NADH. Causes of elevated LDH include neoplastic states (i.e. leukemia, lymphoma, solid tumors), anemia (i.e. megaloblastic, hemolytic), inflammatory and infectious states (i.e. sepsis, tuberculosis), disorders of the lung and muscle (i.e. pneumonia, muscle damage, muscular dystrophy), hepatic disease (i.e. hepatic cirrhosis), renal and myocardial infarctions, trauma, shock and hypotension.

Performing Laboratory

Boulder Community Health

Specimen Requirements

Container/Tube: Serum gel tube

Specimen Volume: 0.5 mL of serum

Specimen Transport Temperature

Store at room temperature for up to 2 days.


Multiple-point rate technology

Reference Values

Normal Adult:  120 - 246 U/L

NOTE: To convert U/L LDH to µkat/L LDH, multiply U/L result by 0.0167.

NOTE: New reference range in use June 7, 2022

Day(s) Test Set Up

Monday through Sunday

Test Classification and CPT Coding


LOINC Code Information