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AAT Bioquest

Fluorimetric Quantitation of Lactate Dehydrogenase

L-LDH dose responses
L-LDH dose responses were measured with Amplite® Fluorimetric L-LDH Assay Kit in a 96-well black plate. As low as 1 mU/mL L-LDH in a 100 µL reaction volume can be detected with 30 minute incubation.
Lactate dehydrogenase (LDH) is an oxidoreductase enzyme that catalyzes the interconversion of pyruvate and lactate. Localized in the cytosol, LDH is present in a wide variety of organisms, including animals and plants. Cells release LDH into the bloodstream after tissue damage or red blood cell hemolysis. Since LDH is a fairly stable enzyme, it has been widely used to evaluate the presence of damage and toxicity of tissue and cells. Quantification of LDH has a broad range of applications.

AAT Bioquest's Amplite® Lactate Dehydrogenase Assay Kits provide both fluorescence- and absorbance-based methods for detecting either L-lactate dehydrogenase (L-LDH) or D-lactate dehydrogenase (D-LDH). In the enzyme coupled assay, LDH is proportionally related to the concentration of NADH that is specifically monitored using a fluorogenic NADH sensor. The fluorescence signal can be read using a fluorescence microplate reader at Ex/Em = 540 nm/590 nm. We were able to detect as low as 1 mU/mL L-LDH in a 100 µL reaction volume. The assays are robust, and can be readily adapted for a wide variety of applications that require the measurement of L-LDH.
 

Table 1. Lactate Dehydrogenase Quantitation Kits Ordering Information

Cat No.
Product Name
Ex (nm)
Em (nm)
Unit Size
13809Amplite® Colorimetric D-Lactate Dehydrogenase (LDH) Assay Kit 575 200 Tests
13813Amplite® Colorimetric L-Lactate Dehydrogenase (LDH) Assay Kit 575 200 Tests
13808Amplite® Fluorimetric D-Lactate Dehydrogenase (LDH) Assay Kit 571585200 Tests
13812Amplite® Fluorimetric L-Lactate Dehydrogenase (LDH) Assay Kit 571585200 Tests