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High Sensitivity L-Lactate Assay Kit (ab169557) is suitable for measuring very low levels of L(+)-lactate in a variety of samples.

Individual kit components also available for purchase with a minimum order of 20 units. Contact us to discuss your needs.


Images

Functional Studies - L-Lactate Assay Kit (Fluorometric, High Sensitivity) (AB169557), expandable thumbnail
  • Functional Studies - L-Lactate Assay Kit (Fluorometric, High Sensitivity) (AB169557), expandable thumbnail
  • Functional Studies - L-Lactate Assay Kit (Fluorometric, High Sensitivity) (AB169557), expandable thumbnail
  • Functional Studies - L-Lactate Assay Kit (Fluorometric, High Sensitivity) (AB169557), expandable thumbnail

Publications

Key facts

Detection method

Fluorescent

Sample types

Plasma, Tissue, Suspension cells, Serum, Other biological fluids, Adherent cells

Assay type

Quantitative

Reactive species

Mammals

Range

1000 - 250000 nmol/well

Sensitivity

< 0.2 µM

Associated Products

Select an associated product type

2 products for Alternative Product

What's included?

100 Test
Components
Assay Buffer XII
1 x 25 mL
Enzyme Mix XV
1 x 1 Vial
L(+)-Lactate Standard
1 x 100 µL
Lactate Substrate Mix
1 x 1 Vial
PicoProbe I
1 x 0.4 mL

Recommended products

High Sensitivity L-Lactate Assay Kit (ab169557) is suitable for measuring very low levels of L(+)-lactate in a variety of samples.

Individual kit components also available for purchase with a minimum order of 20 units. Contact us to discuss your needs.

Key facts

Detection method

Fluorescent

Sample types

Plasma, Tissue, Suspension cells, Serum, Other biological fluids, Adherent cells

Assay type

Quantitative

Reactive species

Mammals

Range

1000 - 250000 nmol/well

Assay Platform

Microplate reader

Sensitivity

< 0.2 µM

Storage

Shipped at conditions

Blue Ice

Appropriate short-term storage conditions

-20°C

Appropriate long-term storage conditions

-20°C

Storage information

-20°C

Notes

High Sensitivity L-Lactate Assay Kit (ab169557) is suitable for measuring very low levels of L(+)-lactate in a variety of samples.

In this assay, L(+)-lactate is specifically oxidized to form an intermediate that reacts with a colorless probe to generate fluorescence (Ex/Em = 535/587 nm), which is directly proportional to the amount of lactate.

This simple, rapid and high-throughput suitable assay kit is the most sensitive lactate assay kit on the market. It can detect L(+)-lactate less than 0.2 μM in a variety of biological samples.

L(+)-Lactate is the major stereo-isomer of lactate formed in human intermediary metabolism and is present in blood. D(-)-Lactate is also present (see ) but only at about 1-5% of the concentration of L(+)-Lactate. Alternative L-Lactate assay kits offer different readout modes/wavelengths and sensitivity/range: - this kit L-Lactate assay ab169557: fluorometric Ex/Em 535/587 nm, range 0.2 µM - 50 µM - our most popular : colorimetric 450nm, range 0.02 mM - 10 mM - : colorimetric 570 nm, fluorometric Ex/Em 535/587 nm, range 0.001 mM - 10 mM Review our 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.

Supplementary info

This supplementary information is collated from multiple sources and compiled automatically.

Activity summary

L-Lactate also known as lactate is a byproduct of anaerobic glycolysis where it plays an important role in energy metabolism. L-Lactate is a small molecule with a molecular mass of approximately 90.08 g/mol. It forms in various tissues like muscle cells during intense exercise when oxygen levels are low. This process leads to a conversion of pyruvate to lactate by the action of the enzyme lactate dehydrogenase (LDH) which is present in many tissues with higher expressions in muscles and heart.

Biological function summary

L-Lactate acts as a signaling molecule which affects cellular functions and contributes to metabolic regulation. It is not part of a complex but serves as an important intermediate in metabolic pathways. L-Lactate provides energy to cells by converting back to pyruvate in the presence of oxygen which then enters the citric acid cycle. This conversion and its utilization as energy play important roles in balancing cellular energy demands especially under hypoxic conditions.

Pathways

L-Lactate links to critical processes like glycolysis and the Cori cycle. During glycolysis pyruvate may convert to L-Lactate under anaerobic conditions to regenerate NAD+ necessary for glycolysis to continue. In the Cori cycle lactate produced by anaerobic glycolysis in muscles is released into the bloodstream and transported to the liver. There it converts back to glucose supporting gluconeogenesis. These processes highlight the close involvement of L-Lactate with proteins such as lactate dehydrogenase and pyruvate kinase.

Associated diseases and disorders

L-Lactate is associated with conditions like lactic acidosis and cancer. Lactic acidosis characterized by high lactate levels can occur due to oxygen deprivation or mitochondrial dysfunction. Meanwhile cancer cells often show enhanced glycolysis and lactate production known as the Warburg effect facilitating their growth. Proteins like hypoxia-inducible factor 1-alpha (HIF-1α) and lactate dehydrogenase (LDH) are key players in these conditions influencing lactate metabolism and potentially serving as therapeutic targets.

Product promise

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In the unlikely event of one of our products not working as expected, you are covered by our product promise.

Full details and terms and conditions can be found here:
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4 product images

  • Functional Studies - L-Lactate Assay Kit (Fluorometric, High Sensitivity) (ab169557), expandable thumbnail

    Functional Studies - L-Lactate Assay Kit (Fluorometric, High Sensitivity) (ab169557)

    Relative signal (RFU) in filtered mouse heart lysate (3.7 mg protein/mL prior to filtration) in different volumes, comparing L-Lactate signals (black) with background reading (white, no enzyme).

  • Functional Studies - L-Lactate Assay Kit (Fluorometric, High Sensitivity) (ab169557), expandable thumbnail

    Functional Studies - L-Lactate Assay Kit (Fluorometric, High Sensitivity) (ab169557)

    L-Lactate measured in unfiltered human plasma (dilution range 1:30-1:90) and mouse serum (dilution range 1:2500-1:7500); duplicates +/- SD. The background control levels (no enzyme) were below level of detection.

  • Functional Studies - L-Lactate Assay Kit (Fluorometric, High Sensitivity) (ab169557), expandable thumbnail

    Functional Studies - L-Lactate Assay Kit (Fluorometric, High Sensitivity) (ab169557)

    Lactate Levels in Various Samples. Measurement of Lactate levels in rat liver (1.2 µg), kidney (0.7 µg), muscle (0.45 µg) and in human serum (0.5 µL from 1:10 diluted serum). Assays were performed following kit protocol.

  • Functional Studies - L-Lactate Assay Kit (Fluorometric, High Sensitivity) (ab169557), expandable thumbnail

    Functional Studies - L-Lactate Assay Kit (Fluorometric, High Sensitivity) (ab169557)

    Standard curve with background signal subtracted (duplicates; +/- SD).

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Product protocols

For this product, it's our understanding that no specific protocols are required. You can:

Please note: All products are 'FOR RESEARCH USE ONLY. NOT FOR USE IN DIAGNOSTIC OR THERAPEUTIC PROCEDURES'.

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