Overview

  • Product name
    Human CD44 ELISA Kit
    See all CD44 kits
  • Detection method
    Colorimetric
  • Precision
    Intra-assay
    Sample n Mean SD CV%
    Sample A 8 9.85ng/ml 1.55 1.52%
    Sample B 8 10.5ng/ml 0.055 4.76%
    Inter-assay
    Sample n Mean SD CV%
    Sample A 50 9.95ng/ml 0.307 3.08%
    Sample B 50 1.07ng/ml 0.105 9.34%
  • Sample type
    Cell culture supernatant, Serum, Plasma
  • Assay type
    Sandwich (quantitative)
  • Sensitivity
    < 0.13 ng/ml
  • Range
    0.31 ng/ml - 10 ng/ml
  • Assay time
    2h 10m
  • Assay duration
    Multiple steps standard assay
  • Species reactivity
    Reacts with: Human
  • Product overview

    Abcam’s CD44 Human in vitro ELISA (Enzyme-Linked Immunosorbent Assay) kit is designed for the quantitative measurement of soluble CD44 in Human serum, plasma, buffered solutions and cell culture medium.

    A monoclonal antibody specific for CD44 has been coated onto the wells of the microtiter strips provided. Samples, including standards of known CD44 concentrations, control specimens or unknowns are pipetted into these wells. During the first incubation, the standards or samples and a biotinylated monoclonal antibody specific for CD44 are simultaneously incubated. After washing, the enzyme Streptavidin-HRP, that binds the biotinylated antibody is added, incubated and washed. A TMB substrate solution is added which acts on the bound enzyme to induce a colored reaction product. The intensity of this colored product is directly proportional to the concentration of CD44 present in the samples. 

    This kit will recognize both endogenous and recombinant Human CD44.

  • Tested applications
    Suitable for: Sandwich ELISAmore details
  • Platform
    Microplate

Properties

  • Storage instructions
    Store at +4°C. Please refer to protocols.
  • Components Identifier 1 x 96 tests 2 x 96 tests
    10X Standard Diluent Buffer Black 1 x 25ml 1 x 25ml
    200X Wash Buffer White 1 x 10ml 2 x 10ml
    Biotinylated Antibody Diluent Red 1 x 7ml 1 x 13ml
    Biotinylated anti-CD44 anitibody Red 1 x 0.3ml 2 x 0.3ml
    CD44 Control Silver 2 vials 4 vials
    CD44 Microplate (12 x 8 well strips) 1 unit 2 units
    CD44 Standard Yellow 2 vials 4 vials
    Chromogen TMB Substrate Solution 1 x 11ml 1 x 24ml
    HRP Diluent Red 1 x 23ml 1 x 23ml
    Plastic Plate Covers 2 units 4 units
    Stop Reagent Black 1 x 11ml 2 x 11ml
    Streptavidin-HRP 2 x 5µl 4 x 5µl
  • Research areas
  • Function
    Receptor for hyaluronic acid (HA). Mediates cell-cell and cell-matrix interactions through its affinity for HA, and possibly also through its affinity for other ligands such as osteopontin, collagens, and matrix metalloproteinases (MMPs). Adhesion with HA plays an important role in cell migration, tumor growth and progression. Also involved in lymphocyte activation, recirculation and homing, and in hematopoiesis. Altered expression or dysfunction causes numerous pathogenic phenotypes. Great protein heterogeneity due to numerous alternative splicing and post-translational modification events.
  • Tissue specificity
    Isoform 10 (epithelial isoform) is expressed by cells of epithelium and highly expressed by carcinomas. Expression is repressed in neuroblastoma cells.
  • Sequence similarities
    Contains 1 Link domain.
  • Domain
    The lectin-like LINK domain is responsible for hyaluronan binding.
  • Post-translational
    modifications
    Proteolytically cleaved in the extracellular matrix by specific proteinases (possibly MMPs) in several cell lines and tumors.
    N-glycosylated.
    O-glycosylated; contains more-or-less-sulfated chondroitin sulfate glycans, whose number may affect the accessibility of specific proteinases to their cleavage site(s).
    Phosphorylated; activation of PKC results in the dephosphorylation of Ser-706 (constitutive phosphorylation site), and the phosphorylation of Ser-672.
  • Cellular localization
    Membrane.
  • Information by UniProt
  • Alternative names
    • LHR
    • BA-1
    • CD 44
    • CD44
    • CD44 antigen
    • CD44 molecule
    • CD44 molecule (Indian blood group)
    • CD44_HUMAN
    • CDw44
    • Cell surface glycoprotein CD44
    • chondroitin sulfate proteoglycan 8
    • CSPG8
    • ECMR-III
    • Epican
    • Extracellular matrix receptor III
    • GP90 lymphocyte homing/adhesion receptor
    • HCELL
    • hematopoietic cell E- and L-selectin ligand
    • Heparan sulfate proteoglycan
    • Hermes antigen
    • homing function and Indian blood group system
    • HSA
    • HUTCH-I
    • HUTCH1
    • Hyaluronate receptor
    • IN
    • INLU-related p80 Glycoprotein
    • MC56
    • MDU2
    • MDU3
    • MGC10468
    • MIC4
    • MUTCH1
    • PGP-1
    • PGP-I
    • PGP1
    • Phagocytic glycoprotein 1
    • Phagocytic glycoprotein I
    • Soluble CD44
    see all
  • Database links

    Applications

    Our Abpromise guarantee covers the use of ab45912 in the following tested applications.

    The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.

    Application Abreviews Notes
    Sandwich ELISA Use at an assay dependent concentration.

    Images

    • Dose Response Curve (Logarithmic)
      Dose Response Curve (Logarithmic)
    • Sandwich ELISA - hu CD44 ELISA kit (ab45912)
      Sandwich ELISA - hu CD44 ELISA kit (ab45912)

      huCD44 measured in biofluids showing quantity (ng) per mL of tested sample

    Protocols

    References

    This product has been referenced in:
    • Lau WM  et al. CD44v8-10 is a cancer-specific marker for gastric cancer stem cells. Cancer Res 74:2630-41 (2014). Read more (PubMed: 24618343) »
    • Simpson KL  et al. A caspase-3 'death-switch' in colorectal cancer cells for induced and synchronous tumor apoptosis in vitro and in vivo facilitates the development of minimally invasive cell death biomarkers. Cell Death Dis 4:e613 (2013). ELISA ; Human . Read more (PubMed: 23640455) »

    See all 4 Publications for this product

    Publishing research using ab45912? Please let us know so that we can cite the reference in this datasheet.

    Customer reviews and Q&As

    Submit a review Submit a question

    6 reviews or Q&A

    10
    Votes: Highest First

    can you tell me if this kit has ever been tested in mouse or rat, and if not, if you could BLAST the immunogen sequences? I am looking for a kit that will not cross-react...

    Thank you for your interest in the CD44 and CD56 ELISA kits, ab45912 and ab119587. Neither has been tested for reactivity with mouse or rat samples. We are unable to assess the probability of cross-reaction by BLAST, as the locations of the epitopes th...

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    Is for my elisa kit : The ab45912 kit wash buffer PBS or TBS?

    Thank you for contacting Abcam regarding ab45912.


    The wash buffer we recommend if you have run out is PBS with 0.05% Tween 20.


    I hope this information is helpful. Please do not hesitate to contact us if you have any addition...

    Read More

    Dear Technical support team,

    Pls attached this file.

    And the customer want to know that where is the epitope that the antibodydetected?

    Thank you very much.

    Best regards,

    Thank you for the question and for the customer to have taken the time to illustrate the question.

    The laboratory confirmed thatboth antibodies will recognize the part after the cleavage site - the part which will be detached from the cells -...

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    Dear Technical support teams,

    Could you pls check the cat.no. of antibody that use in the ab45912 >>> CD44 Human ELISA Kit (ab45912) ?

    Because the customer want to detect the CD44with 2 system. (soluble form and on cell s...

    Read More

    Thank you for your inquiry and your patience.

    Unfortunately the antibody used as detection antibody has not been tested in any other application as IHC or ICC. We do therefore not know whether it can detect the CD44 on the cells.

    Th...

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    i have a question regarding to Human CD44 Elisa Kit - 1 x 96 Well Plate. could you tell me if the test is effective for detection of cd44 in saliva or oral rinses?

    Thank you for your enquiry and your interest. This product has been specifically tested and it is suitable for cell culture supernatant, serum, plasma. We have not tested in other body fluids. For further information, please take a look ...

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    I have a question regarding to Human CD44 ELISA Kit - 1 x 96 Well Plate, ab45912. Could you tell me the suitable lysis buffer for solubilising plasma membrane to detect CD44 by this Kit?

    Thank you for your enquiry about ab45912. The constitutions of recommended lysis buffer is as follows; NaCl 150mM, NP-40 1%, Tris-HCl 20mM -adjust to pH=8 with protease inhibitors. I hope this information helps you, and please do not hesitate to con...

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