Abcam, ab65331, L-Lactate Assay Kit (Colorimetric)

Size: 100Test
L-Lactate Assay Kit (Colorimetric) ab65331 is a quantitive, addition-only assay with one 30-min room temperature incubation - Cited in over 300 publications - Individual kit components also available for purchase with a minimum order of 20 units. Contact us to discuss your needs.
Key facts
Detection method:Colorimetric,
Sample types:Tissue Lysate, Urine, Plasma, Cell culture supernatant, Serum, Other biological fluids, Cell Lysate,
Assay type:Quantitative,
Sensitivity:= 0.02 mM,
Range:0.02 - 20 mM,
Assay time:30m,
Assay Platform:Microplate reader

Product details:
L-Lactate Assay Kit (Colorimetric) (ab65331) uses an assay protocol 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, tissues, cell culture and fermentation media.
Lactate assay protocol summary
- Add samples and standards to wells.
- Add reaction mix and incubate for 30 min at room temp.
- Analyze with microplate reader.
Related Lactate assay products
Alternative L-Lactate assay kits offer different readout modes/wavelengths and sensitivity/range:
- L-Lactate assay
ab65330
: colorimetric 570 nm, fluorometric Ex/Em 535/587 nm, range 0.001 mM - 10 mM
- This kit, our most popular L-Lactate assay kit ab65331: colorimetric 450nm, range 0.02 mM - 10 mM
- L-Lactate assay kit
ab169557
: fluorometric Ex/Em 535/587 nm, range 0.2 µM - 50 µM.
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.
We also provide D-Lactate assay kit
ab83429
How other researchers are using L-Lactate Assay Kit ab65331
This Lactate assay kit has been used in publications in a variety of sample types, including:
- Human: THP-1 cell lysates
, MDA-MB-231 and HepG2 cell culture lysates
, cell culture supernatant (HepG2, A549, Huh7, PC3, LN229, HeLa)
, brain tissue
- Mouse: brown adipose tissue lysate
, thymic lymphoma tissue
, cell culture supernatant
, T cell primary cell culture supernatants
, serum
, serum and muscle
- Bovine: cumulus cell culture supernatant
References: 1 - Tran UT and Kitami T 2019; 2 - Cui J et al 2019; 3 - Rodriguez ML et al 2018, Chen Y et al 2018, Zhang D et al 2018, Caino MC et al 2017, Birkenmeier K et al 2015; 4 - Sullivan RC et al 2019; 5 - Jeong JH et al 2018; 6 - Vara-Ciruelos D et al 2019; 7 - Fiorenzano et al 2016; 8 - Menk AV et al 2018; 9 - Deng W et al 2019, Guglielmetti C et al 2017, Kang R et al 2016; 10 - Kim HY et al 2016; 11 - Sinha et al 2017.
Lactate assay methods
There are two lactate assay methods established in biological research:
a) The most commonly used method, where lactate dehydrogenase processes lactate in the presence of NAD+ to produce pyruvate and NADH. NADH then reduces a probe to form a colorimetric or fluorometric readout. This method, with some improvements, is used in ab65331 and in
ab169557
b) The alternative method, where lactate oxidase processes lactate to produce pyruvate and hydrogen peroxide. This is followed by oxidation of a substrate by a peroxidase using the hydrogen peroxide to produce a colorimetric or fluorometric readout. This method is used in
ab65330
Other notes
This product was previously called K627 Biovision Lactate Colorimetric Assay Kit II. Abcam acquired BioVision in 2021.
REACH authorisation
Abcam has not and does not intend to apply for the REACH Authorisation of customers' uses of products that contain European Authorisation list (Annex XIV) substances.
It is the responsibility of our customers to check the necessity of application of REACH Authorisation, and any other relevant authorisations, for their intended uses.

Properties and Storage Information:
Shipped at conditions-Blue Ice, Appropriate short-term storage conditions--20°C, Appropriate long-term storage conditions--20°C, Storage information--20°C

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