Lactate Dehydrogenase (LDH) Assay Kit (Colorimetric) ab102526 quantifies LDH activity in a variety of samples such as serum or plasma, tissue, cells, and culture medium.
Individual kit components also available for purchase with a minimum order of 20 units. Contact us to discuss your needs.
Colorimetric
Plasma, Urine (UTI), Tissue Extracts, Cell culture supernatant, Serum, Other biological fluids
Enzyme activity (quantitative)
1 - 100 mU/mL
30m
> 1 mU/mL
Select an associated product type
L-lactate dehydrogenase A chain, LDH-A, Cell proliferation-inducing gene 19 protein, LDH muscle subunit, Renal carcinoma antigen NY-REN-59, LDH-M, PIG19, LDHA
Lactate Dehydrogenase (LDH) Assay Kit (Colorimetric) ab102526 quantifies LDH activity in a variety of samples such as serum or plasma, tissue, cells, and culture medium.
Individual kit components also available for purchase with a minimum order of 20 units. Contact us to discuss your needs.
L-lactate dehydrogenase A chain, LDH-A, Cell proliferation-inducing gene 19 protein, LDH muscle subunit, Renal carcinoma antigen NY-REN-59, LDH-M, PIG19, LDHA
Colorimetric
Plasma, Urine (UTI), Tissue Extracts, Cell culture supernatant, Serum, Other biological fluids
Enzyme activity (quantitative)
1 - 100 mU/mL
30m
Microplate reader
> 1 mU/mL
Blue Ice
-20°C
-20°C
-20°C
Lactate Dehydrogenase (LDH) Assay Kit (Colorimetric) ab102526 quantifies LDH activity in a variety of samples such as serum or plasma, tissue, cells, and culture medium.
In the LDH assay protocol, LDH reduces NAD to NADH, which then interacts with a specific probe to produce a color (OD max = 450 nm). The kit can detect 1 - 100 mU/mL of LDH directly in samples. The assay is quick, convenient, and sensitive.
LDH assay protocol summary:
- add samples and standards to wells
- add reaction mix
- analyze every 2-3 min for at least 30 min with microplate reader in kinetic mode at 37°C
Technical Note: LDH activity is unlikely to be detectable in healthy urine but may be elevated in the presence of infection or disease of the urinary tract.
This product is manufactured by BioVision, an Abcam company and was previously called K726 Lactate Dehydrogenase Activity Colorimetric Assay Kit. K726-500 is the same size as the 500 test size of ab102526.
To measure LDH release into cell culture medium from cultured cells in a cytoxicity experiment, we recommend LDH assay kit LDH Assay Kit (Cytotoxicity) ab65393, which is designed specifically as a cytotoxicity assay.
This LDH assay kit ab102526 is designed in a more flexible format for use with a variety of sample types (this includes cell culture medium, and this kit may be used in cytotoxicity assays). This flexible format LDH assay kit is also available as a fluorometric LDH assay kit ab197000.
How other researchers have used LDH Assay Kit ab102526
This LDH assay kit has been used in publications in a variety of sample types, including:
- Human: serum1
- Mouse: kidney tissue2, kidney epithelial cell line lysates3, muscle tissue4, serum2,5, vaginal lavage fluid6, liver tissue7
- Rat: H8C2 cell lysates8
It has also been used in LDH release cytotoxicity cell culture assays including in human hippocampal neuronal cultures9, THP-1 cells10, primary chondrocyte cells on a membrane scaffold11, primary lymphocytes12, ovarian cancer cells co-cultured with mouse splenocytes in a cytotoxic T lymphocyte assay13
References: 1-Zhang Z et al 2018, Solivio MJ et al 2016; 2-Niles DJ et al 2018; 3-Tanner LB et al 2018; 4-Tam BT et al 2018; 5-Kim HY et al 2016; 6-Nash EE et al 2016; 7-Lai C et al 2018; 8-Zhou Z et al 2018; 9-Wang Q et al 2019; 10-Alimov I et al 2019; 11-Stocco TD et al 2019; 12-Dreisig K et al 2018; 13-Sun Y et al 2018
Lactate dehydrogenase (LDH) is an enzyme that catalyzes the interconversion of pyruvate and lactate along with the conversion of NADH to NAD+. LDH is known by other names such as lactic acid dehydrogenase and LDH-5. The enzyme has a molecular weight of approximately 36 kDa. LDH exists in almost all tissues having multiple isoforms that are expressed differently depending on the tissue type. It shows high expression in muscle tissue liver and heart indicating its extensive role in energy metabolism.
Lactate dehydrogenase plays a critical role in anaerobic glycolysis. The enzyme helps in regenerating NAD+ from NADH allowing glycolysis to continue in the absence of oxygen. LDH is not a part of any larger protein complex working independently to fulfill its function in the glycolytic pathway. It serves in rapid energy production especially under hypoxic or exertional conditions where oxygen supply is limited.
LDH is significantly involved in the glycolysis and gluconeogenesis pathways. Within glycolysis LDH helps facilitate the conversion of pyruvate to lactate during anaerobic conditions a step important for ATP production when oxygen is scarce. The enzyme is tied closely to phosphofructokinase-1 (PFK-1) in glycolysis given that both enzymes are central to maintaining the glycolytic flow. In gluconeogenesis though functionally reversed from its role in glycolysis LDH helps to manage lactate removal an important step for glucose synthesis from non-carbohydrate sources.
Lactate dehydrogenase levels often act as a biomarker for tissue damage or certain cancers as its release into the bloodstream signals cellular injury or death. Elevated LDH levels are associated with conditions like myocardial infarction and certain forms of anemia. In cancer such as lymphoma or leukemia LDH correlates with the progression of the disease and acts as a prognostic marker. LDH's connection to these conditions often leads to insights into disease severity and progression due to its association with proteins like p53 and HIF-1 which play roles in cellular metabolism and hypoxia response.
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Terms & Conditions.
LDH assay on mouse skeletal muscle.
Tam BT et al. used the LDH assay kit on mouse skeletal muscle tissue lysates comparing pressure-induced compressed and control samples across a range of knockout mice lines.
Kinetic profiles of approx 0.5 mU of a sample of pure LDH (Positive Control) and 2 μL frozen human serum using buffer as a background control.
NADH Standard Curve.
Cellular necrosis was measured as LDH release after cisplatin treatment for 24 h and 48 h using ab102526. The release of LDH was apparently increased at 24 and 48 h after cisplatin treatment.
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