Lactate Dehydrogenase and Isoenzymes
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LDH and isos, LD, and isos.
To assess myocardial or skeletal muscle damage toward diagnosing disorders such as myocardial infarction or damage to brain, liver, kidneys, and skeletal muscle.
Serum collected in a gold-, red-, or red/gray-top tube.
(Method: Enzymatic [L to P] for lactate dehydrogenase, electrophoretic analysis for isoenzymes) Reference ranges are method dependent and may vary among laboratories.
|Age||Conventional & SI Units|
|0–2 yr||125–275 units/L|
|2–3 yr||166–232 units/L|
|4–6 yr||104–206 units/L|
|7–12 yr||90–203 units/L|
|13–14 yr||90–199 units/L|
|15–43 yr||90–156 units/L|
|Greater than 43 yr||90–176 units/L|
|LDH Fraction||% of Total||Fraction of Total|