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Lactate Dehydrogenase (LDH)
MessageDay(s) Test Set Up: Monday through Sunday
Test Code
LDH
CPT Codes
83615
Preferred Specimen
1.0 mL plasma
Instructions
Draw blood in an PST tube. Spin down. Avoid hemolysis. Note: Patient's age and sex are required on request form for processing.
Transport Container
PST Tube
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Please do not refrigerate
Methodology
Multiple Pint Rate
Reference Range
Males
0-3 years: 500-920 IU/L
4-6 years: 470-900 IU/L
7-9 years: 420-750 IU/L
10-13 years: 430-750 IU/L
14-19 years: 340-730 IU/L
>20 years: 31-618 IU/L
Females
0-3 years: 500-920 IU/L
4-6 years: 470-900 IU/L
7-9 years: 420-750 IU/L
10-13 years: 380-770 IU/L
14-19 years: 340-670 IU/L
>20 years: 313-618 IU/L
0-3 years: 500-920 IU/L
4-6 years: 470-900 IU/L
7-9 years: 420-750 IU/L
10-13 years: 430-750 IU/L
14-19 years: 340-730 IU/L
>20 years: 31-618 IU/L
Females
0-3 years: 500-920 IU/L
4-6 years: 470-900 IU/L
7-9 years: 420-750 IU/L
10-13 years: 380-770 IU/L
14-19 years: 340-670 IU/L
>20 years: 313-618 IU/L
Clinical Significance
Lactate dehydrogenase is an enzyme present in the cytosol of all human cells; it catalyzes the reversibe reduction of pyruvate to lactate using nicotinamide adenine dinucleotide (NADH). The causes of increased LDH include neoplastic states, myocardial infarction, hypoxic cardio respiratory diseases, trauma, shock, and hypotension.
Last Updated: July 13, 2018
