Mouse CD40 Quantikine ELISA Kit

  • Assay Type
    Solid Phase Sandwich ELISA
  • Format
    96-well strip plate
  • Assay Length
    4.5 hours
  • Sample Type & Volume Required Per Well
    Cell Culture Supernates (50 uL), Cell Lysates (50 uL), Serum (50 uL), EDTA Plasma (50 uL), Heparin Plasma (50 uL)
  • Sensitivity
    3.7 pg/mL
  • Assay Range
    7.8 - 500 pg/mL (Cell Culture Supernates, Cell Lysates, Serum, EDTA Plasma, Heparin Plasma)
  • Specificity
    Natural and recombinant mouse CD40
  • Cross-reactivity
    < 0.5% cross-reactivity observed with available related molecules.< 50% cross-species reactivity observed with species tested.
  • Interference
    No significant interference observed with available related molecules.
Product Summary
The Quantikine Mouse CD40 Immunoassay is a 4.5 hour solid phase ELISA designed to measure CD40 in cell culture supernates, cell lysates, serum, and plasma. It contains NS0-expressed recombinant mouse CD40 and has been shown to accurately quantitate the recombinant factor. Results obtained using natural CD40 showed linear curves that were parallel to the standard curves obtained using the Quantikine kit standards. These results indicate that this kit can be used to determine relative mass values for naturally occurring mouse CD40.

Intra-Assay Precision (Precision within an assay) Three samples of known concentration were tested on one plate to assess intra-assay precision.
Inter-Assay Precision (Precision between assays) Three samples of known concentration were tested in separate assays to assess inter-assay precision.
Cell Culture Supernates, Cell Lysates, Serum, EDTA Plasma, Heparin Plasma
Intra-Assay Precision Inter-Assay Precision
Standard Deviation1.


The recovery of mouse CD40 spiked to levels throughout the range of the assay was evaluated.

Sample Type Average % Recovery Range %
Cell Culture Supernates (n=4) 102 86-119
EDTA Plasma (n=4) 96 82-109
Heparin Plasma (n=4) 92 83-109
Serum (n=4) 92 81-106
To assess the linearity of the assay, samples containing and/or spiked with high concentrations of mouse CD40 were serially diluted with Calibrator Diluent to produce samples with values within the dynamic range of the assay.
Mouse CD40 Quantikine ELISA Kit
Preparation and Storage
  • Storage
    Store the unopened product at 2 - 8 °C. Do not use past expiration date.
Background: CD40/TNFRSF5
CD40, also known as TNFRSF5, is a transmembrane TNF superfamily receptor that is expressed on the surface of B cells, dendritic cells, macrophages, monocytes and platelets, as well as endothelial and epithelial cells. Interaction of CD40 with CD40 Ligand leads to the aggregation of CD40 molecules resulting in the initiation of bidirectional intracellular signaling in both CD40 and CD40 Ligand expressing cells. This interaction promotes B cell activation and T cell-dependent humoral responses. CD40 serves multiple functions in both hematopoietic and epithelial cancers and is a target for tumor immunotherapy. Dysregulation of CD40/CD40 Ligand expression and interactions contributes to disease severity in AIDS, atherosclerosis, atherothrombosis, and restenosis.
    • Entrez Gene IDs
      958 (Human); 21939 (Mouse); 171369 (Rat);
    • Alternate Names
      B cell surface antigen CD40; B-cell surface antigen CD40; Bp50B cell-associated molecule; CD40 antigen; CD40 molecule, TNF receptor superfamily member 5; CD40 type II isoform; CD40; CD40L receptor; CDw40; MGC9013; nerve growth factor receptor-related B-lymphocyte activation molecule; p50; TNFRSF5; TNFRSF5CD40 antigen (TNF receptor superfamily member 5); tumor necrosis factor receptor superfamily member 5; tumor necrosis factor receptor superfamily, member 5;
    Related Research Areas
    Assay Procedure
    Refer to the product for complete assay procedure.

    Bring all reagents and samples to room temperature before use. It is recommended that all samples, standards, and controls be assayed in duplicate.
    1.   Prepare all reagents, standard dilutions, and samples as directed in the product insert.
    2.   Remove excess microplate strips from the plate frame, return them to the foil pouch containing the desiccant pack, and reseal.

    3. 50 µL Assay Diluent
    4.   Add 50 µL of Assay Diluent to each well.

    5. 50 µL Standard, Control, or Sample
    6.   Add 50 µL of Standard, Control, or sample to each well. Cover with a plate sealer, and incubate at room temperature for 2 hours.
    7.   Aspirate each well and wash, repeating the process 4 times for a total of 5 washes.

    8. 100 µL Conjugate
    9.   Add 100 µL of Conjugate to each well. Cover with a new plate sealer, and incubate at room temperature for 2 hours.
    10.   Aspirate and wash 5 times.

    11. 100 µL Substrate Solution
    12.   Add 100 µL Substrate Solution to each well. Incubate at room temperature for 30 minutes. PROTECT FROM LIGHT.

    13. 100 µL Stop Solution
    14.   Add 100 µL of Stop Solution to each well. Read at 450 nm within 30 minutes. Set wavelength correction to 540 nm or 570 nm.
    Supplemental ELISA Products
    Description Application Cat# Citations Images  

    Quantikine Wash Buffer 1

    ELISA WA126 5
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    Cell Lysis Buffer 2 (1 x 21 mL)

    ELISA 895347 1
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    Catalog# Size Price Stock Quantity
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