Human Neuropilin-1 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 (13 uL), Serum (10 uL), EDTA Plasma (10 uL), Heparin Plasma (10 uL), Urine (50 uL), Human Milk (10 uL)
  • Sensitivity
    9.33 pg/mL
  • Assay Range
    78.1 - 5,000 pg/mL (Cell Culture Supernates, Cell Lysates, Serum, EDTA Plasma, Heparin Plasma, Urine, Human Milk)
  • Specificity
    Natural and recombinant human Neuropilin-1.
  • 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.
Control Available
Product Summary
The Quantikine Human Neuropilin-1 Immunoassay is a 4.5 hour solid-phase ELISA designed to measure human Neuropilin-1 in cell culture supernates, cell lysates, serum, plasma, urine, and human milk. It contains NS0-expressed recombinant human Neuropilin-1 and has been shown to accurately quantitate the recombinant factor. Results obtained using natural human Neuropilin-1 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 human Neuropilin-1.

Intra-Assay Precision (Precision within an assay) Three samples of known concentration were tested twenty times on one plate to assess intra-assay precision.
Inter-Assay Precision (Precision between assays) Three samples of known concentration were tested in twenty separate assays to assess inter-assay precision. Assays were performed by at least three technicians using two lots of components.
Cell Culture Supernates, Cell Lysates, Serum, EDTA Plasma, Heparin Plasma, Urine, Human Milk
Intra-Assay Precision Inter-Assay Precision
Standard Deviation17.970.454.719.848.490.4


The recovery of human Neuropilin-1 spiked to levels throughout the range of the assay in various matrices was evaluated.

Sample Type Average % Recovery Range %
Cell Culture Media (n=4) 91 86-99
Cell Lysates (n=3) 101 94-108
Urine (n=4) 99 85-117
To assess the linearity of the assay, samples containing and/or spiked with high concentrations of human Neuropilin-1 were diluted with Calibrator Diluent to produce samples with values within the dynamic range of the assay.
Human Neuropilin-1 Quantikine ELISA Kit
Preparation and Storage
  • Storage
    Store the unopened product at 2 - 8 °C. Do not use past expiration date.
Background: Neuropilin-1
Neuropilin-1 (Npn-1, previously known as neuropilin) and Neuropilin-2 (previously known as Npn-1-related molecule) are type I transmembrane proteins that bind distinct members of the class III secreted semaphorin subfamily that are implicated in repulsive axon guidance. Neuropilin extracellular domains contain two CUB (complement-binding) domains, two domains with homology to coagulation factors V and VIII, and a MAM (meprin) domain. In the absence of ligands, neuropilins can form homo- and hetero-oligomers via their MAM domains. Expression in developing neurons of the central and peripheral nervous systems is somewhat overlapping but distinct. Npn-1 and Npn-2 are also receptors for VEGF165 on endothelial and tumor cells.
    • Entrez Gene IDs
      8829 (Human); 18186 (Mouse); 246331 (Rat);
    • Alternate Names
      BDCA4; BDCA-4; CD304 antigen; CD304; DKFZp686A03134; DKFZp781F1414; neuropilin 1; Neuropilin1; neuropilin-1; NRP1; NRPNP1; transmembrane receptor; Vascular endothelial cell growth factor 165 receptor; VEGF165RCD304;
    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 on a horizontal orbital microplate shaker.
    7.   Aspirate each well and wash, repeating the process 3 times for a total of 4 washes.

    8. 200 µL Conjugate
    9.   Add 200 µL of Conjugate to each well. Cover with a new plate sealer, and incubate at room temperature for 2 hours on the shaker.
    10.   Aspirate and wash 4 times.

    11. 200 µL Substrate Solution
    12.   Add 200 µL Substrate Solution to each well. Incubate at room temperature for 30 minutes on the benchtop. PROTECT FROM LIGHT.

    13. 50 µL Stop Solution
    14.   Add 50 µL of Stop Solution to each well. Read at 450 nm within 30 minutes. Set wavelength correction to 540 nm or 570 nm.
    ELISA Controls
    Description Application Cat# Citations Images  

    Quantikine Immunoassay Control Set 848 Human Neuropilin-1

    Ctrl QC187
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    Supplemental ELISA Products
    Description Application Cat# Citations Images  

    Quantikine Wash Buffer 1

    ELISA WA126 5
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