D- and L-lactate serum levels

D- and L-lactate serum levels
Lactate, the anion that results from dissociation of lactic acid, is an intracellular metabolite of glucose; specifically it is the end product of anaerobic glycolysis, the final step of which is conversion of pyruvate to lactate by the enzyme lactate dehydrogenase. The two lactate isomers are known as L-lactate and D-lactate. Both forms (stereoisomers) of lactate are produced from and metabolized to pyruvate by the action of the enzyme lactate dehydrogenase (LDH).
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Serum-based tests : 2 ml SERUM. Centrifuge immediately after clotting. Keep at ambient temperature or 4°C for 24h. For longer periods, aliquot, freeze and ship frozen.