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CheKine™ Xanthine Oxidase Assay Kit

Product Information

  • Product name

    CheKine™ Xanthine Oxidase Assay Kit

  • Application notes

    CheKine™ Xanthine Oxidase Assay Kit provides a simple and easy colorimetric assay for the quantitative determination of the XO present in a variety of samples. In the assay, XO oxidizes xanthine to superoxide (O2-). Superoxide (O2-) reacts with a tetrazolium salt WST-8 dye to form a water-soluble colored formazan product, which can be easily quantified colorimetrically at OD 450 nm. Therefore, the Xanthine Oxidase present in the sample is proportional to the signal obtained.

Fig. Standard Curve of Xanthine Oxidase activity assay. The y-axis is ΔOD and the x-axis is Xanthine Oxidase concentration (mU/mL).

Product Properties

  • Kit components

    • Assay Buffer
    • Sample Diluent
    • WST-8
    • Enhancer
    • Xanthine Oxidase Standard(10 U/mL)
    • Xanthine

  • Features & Benefits

    • Determination of xanthine oxidase activity in serum, plasma, tissue/cell lysates and other biological fluids.
    • A broad range linearity: 15.6 -500 mU/mL.

  • Usage notes

    • Briefly centrifuge small vials at low speed prior to opening.
    • If not assayed immediately, samples can be stored at -80°C.

  • Storage instructions

    Storage at -20°C and Keep from light immediately upon receipt. Kit has a storage time of 6 months from receipt. Refer to list of materials supplied for storage conditions of individual components.

  • Shipping

    Gel pack with blue ice.

  • Precautions

    The product listed herein is for research use only and is not intended for use in human or clinical diagnosis. Suggested applications of our products are not recommendations to use our products in violation of any patent or as a license. We cannot be responsible for patent infringements or other violations that may occur with the use of this product.

Additional Information

  • Background

    Xanthine oxidase (EC, or xanthine oxidoreductase is recognized as the terminal enzyme of purine catabolism in humans, catalyzing the hydroxylation of hypoxanthine to xanthine and then to uric acid. When acting as an NADH oxidase, XO is a generator of superoxide (O2-), a powerful reactive oxygen species (ROS). XO has also been noted to produce hydrogen peroxide (H2O2) and superoxide (O2-) during ischemia-reperfusion injury. Due to their highly reactive nature, these ROS affect various molecular components of the cell, with excess amounts leading to cell degeneration and death. XO is present in appreciable amounts in the liver and jejunum in healthy individuals. However, in various liver disorders, levels of circulating XO have been seen to increase dramatically. Therefore, determination of serum XO level serves as a sensitive indicator of acute liver damage such as jaundice.

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CheKine™ Xanthine Oxidase Assay Kit
Click to download booklet for more details

Notice:Protocol may vary from different lot which is subject to the manual along with the shipment. Please contact for your enquiry.

Here we provide some standard research protocols for bioscience including molecular biology, cell biology, immunology, plant biology, genetics, etc. To our knowledge, customized protocols are not required for most products. So please try the standard protocols listed below and let us know how you get on.

Preparation methods for Biochemical

Biochemical reagents have been widely used in life science fundamental research as buffer, probes, substrates, intermediates and standards, etc. You may optimize or choose proper protocols for your specific assay. However, some of tips and suggestions listed below may be for your reference.

  1. ♦ What and how to make a "good" buffer?

Antibody application protocols

Antibodies are useful not only to detect specific biomolecules but also to measure changes in their level and specificity of modification by processes such as phosphorylation, methylation, or glycosylation. Here show some protocols and troubleshooting tips on how to get the best from our antibodies.

  1. ♦ Antibody Western Blotting (WB) protocol
  2. ♦ Antibody Immunohistochemistry (IHC) protocol
  3. ♦ Antibody Immunofluorescence (IF) protocol
  4. ♦ Antibody Immunoprecipitation (IP) protocol
  5. ♦ Antibody Enzyme-Linked ImmunoSorbent Assay (ELISA) protocol

Protein&peptide usage suggestions

Synthetic peptides, native or recombinant proteins can be used for medical, academic and research purposes, such as gene therapy, drug screening, antibody production, cell function analysis. Here, we provide some of tips and suggestions for your reference.

  1. ♦ Handling and storage suggestion for peptides and protein
  2. ♦ Cytokines and growth factors for cell culture application

Commonly used assay kits guidelines

Assay kits that are simple and convenient to use, which are superior in performance and require little to no time for assay optimization. Further details of specific products which are needed for individual protocols are given in the protocols themselves in booklet.

We hope this will be helpful for your research work. Please let us know through if you need more information or support.

Cat #: KTB1070

  • Size
  • Price
  • 48T $80
  • 96T $120
  • 480T $360

Contact information

Do not hesitate to contact us if you have any questions.

  •  Customer:
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  •  Tel: +86-27-59716789
  •  Fax: +86-27-59716788
  • Global Headquarters: Bldg 1, Harbour of Technology Times, No.35, Optical Valley Ave, Wuhan, Hubei, China. 430074

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