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L-Lactate Assay Kit (Colorimetric) (ab65331) is an assay where lactate is oxidized by lactate dehydrogenase to generate a product which interacts with a probe to produce a color (λmax = 450 nm). The kit detects L(+)-Lactate in biological samples such as serum or plasma, cells, culture and fermentation media. There is no need for pretreatment or purification of samples.
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Review our Metabolism Assay Guide to learn about assays for metabolites, metabolic enzymes, mitochondrial function, and oxidative stress, and also about how to assay metabolic function in live cells using your plate reader.
L(+)-Lactate is the major stereo-isomer of lactate formed in human intermediary metabolism and is present in blood. D(-)-Lactate is also present but only at about 1-5% of the concentration of L(+)-Lactate.
|L(+)-Lactate Standard (100 nmol/µl)||Yellow||1 x 100µl|
|Lactate Assay Buffer||WM||1 x 25ml|
|Lactate Enzyme Mix (lyophilized)||Green||1 vial|
|Lactate Substrate Mix||Red||1 vial|
Our Abpromise guarantee covers the use of ab65331 in the following tested applications.
The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.
|Functional Studies||Use at an assay dependent dilution.|
Plasma lactate concentrations were determined using L-Lactate assay kit (ab65331) in Ark2C+/+ and Ark2C−/− (Arkadia-like gene) mice.
Linearity of dilution: concentration of L-Lactate in differently diluted (X-axis) biological samples, demonstrating a linearity of 89%-111% (concentrations corrected for by factor of dilution; duplicates; +/- SD).
Relative signal (RFU) in unfiltered human plasma (dilution 1:8), comparing L-lactate signals with background reading (no enzyme) after 10 minutes of incubation (duplicates +/- SD).
Standard curve with background signal subtracted (duplicates; +/- SD).
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