Key features and details
- Assay type: Quantitative
- Detection method: Fluorescent
- Platform: Microplate reader
- Sample type: Adherent cells, Other biological fluids, Plasma, Serum, Suspension cells, Tissue
- Sensitivity: 0.2 µM
Product nameL-Lactate Assay Kit (Fluorometric, High Sensitivity)
See all L-Lactate kits
Sample typeSerum, Plasma, Other biological fluids, Tissue, Adherent cells, Suspension cells
Sensitivity< 0.2 µM
Range1000 nmol/well - 250000 nmol/well
Species reactivityReacts with: Mammals, Other species
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 D-Lactate assay kits) 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 L-Lactate assay ab65331: colorimetric 450nm, range 0.02 mM - 10 mM
- L-Lactate assay ab65330: colorimetric 570 nm, fluorometric Ex/Em 535/587 nm, range 0.001 mM - 10 mM
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.
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.
Storage instructionsStore at -20°C. Please refer to protocols.
Components Identifier 100 tests L(+)-Lactate Standard (100mM) Yellow 1 x 100µl Lactate Assay Buffer WM 1 x 25ml Lactate Enzyme Mix (lyophilized) Green 1 vial Lactate Substrate Mix Red 1 vial PicoProbe Blue 1 x 0.4ml
RelevanceLactate (CH3CH(OH)COO-) plays important roles in many biological processes. Abnormal high concentration of lactate has been related to disease states such as diabetes and lactate acidosis, etc. L(+)-Lactate is the major stereoisomer of lactate formed in human intermediary metabolism and is present in blood. The lactate to pyruvate ratio reflects the redox state of the cell and describes the balance beween NAD+ and NADH, which is dependent on the interconversion of lactate and pyruvate via lactate dehydrogenase (LDH).
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).
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.
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.
Standard curve with background signal subtracted (duplicates; +/- SD).
ab169557 has not yet been referenced specifically in any publications.