Human IL-2(Interleukin 2) ELISA Kit

    • sandwich-Ab-ELISA-Elabscience
    • sandwich-Ab-ELISA-Elabscience
    • sandwich-Ab-ELISA-Elabscience
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    >
    • sandwich-Ab-ELISA-Elabscience
    • sandwich-Ab-ELISA-Elabscience
    • sandwich-Ab-ELISA-Elabscience
    • sandwich-Ab-ELISA-Elabscience
    • sandwich-Ab-ELISA-Elabscience
    • sandwich-Ab-ELISA-Elabscience

      Catalog number:E-EL-H0099

      Synonyms:IL2, TCGF, Lymphokine

      Size:
      • 96T
      • 24T
      Qty:
      - +
      Price: $495

      Reactivity: Human

      Detection Range: 7.81~500 pg/mL

      Sensitivity: 4.69 pg/mL

      Lead Time: 7~10 daysWelcome to order from local distributors.

      Add to cart Compare Bulk request Manual

      Intended use

      This ELISA kit applies to the in vitro quantitative determination of Human IL-2 concentrations in serum, plasma and other biological fluids.

      Test principle

      This ELISA kit uses the Sandwich-ELISA principle. The micro ELISA plate provided in this kit has been pre-coated with an antibody specific to Human IL-2. Standards or samples are added to the micro ELISA plate wells and combined with the specific antibody. Then a biotinylated detection antibody specific for Human IL-2 and Avidin-Horseradish Peroxidase (HRP) conjugate are added successively to each micro plate well and incubated. Free components are washed away. The substrate solution is added to each well. Only those wells that contain Human IL-2, biotinylated detection antibody and Avidin-HRP conjugate will appear blue in color. The enzyme-substrate reaction is terminated by the addition of stop solution and the color turns yellow. The optical density (OD) is measured spectrophotometrically at a wavelength of 450 nm ± 2 nm. The OD value is proportional to the concentration of Human IL-2. You can calculate the concentration of Human IL-2 in the samples by comparing the OD of the samples to the standard curve.

      Assay type Sandwich
      Format 96T
      Assay time 3.5h
      Reactivity Human
      Detection Method Colormetric
      Detection Range 7.81—500 pg/mL
      Sensitivity 4.69 pg/mL
      Sample Volume Required Per Well 100μL
      Sample Type Serum, plasma and other biological fluids

      Specificity

      This kit recognizes Human IL-2 in samples. No significant cross-reactivity or interference between Human IL-2 and analogues was observed.

      Typical data

      As the OD values of the standard curve may vary according to the conditions of the actual assay performance (e.g. operator, pipetting technique, washing technique or temperature effects), the operator should establish a standard curve for each test. Typical standard curve and data is provided below for reference only.

      Concentration
      (pg/mL)
      O.D Average Corrected
      500 2.488
      2.585
      2.537 2.48
      250 1.61
      1.637
      1.624 1.567
      125 0.991
      0.935
      0.963 0.906
      62.5 0.472
      0.456
      0.464 0.407
      31.25 0.268
      0.271
      0.27 0.213
      15.63 0.18
      0.17
      0.175 0.118
      7.81 0.129
      0.118
      0.124 0.067
      0 0.058
      0.055
      0.057 --

      Precision

      Intra-assay Precision (Precision within an assay): 3 samples with low, mid range and high level Human IL-2 were tested 20 times on one plate, respectively.
      Inter-assay Precision (Precision between assays): 3 samples with low, mid range and high level Human IL-2 were tested on 3 different plates, 20 replicates in each plate.

      Intra-assay Precision Inter-assay Precision
      Sample 1 2 3 1 2 3
      n 20 20 20 20 20 20
      Mean (pg/mL) 23.64 58.38 217.66 23.12 56.78 226.32
      Standard deviation 1.29 2.76 11.30 1.26 2.61 9.30
      C V (%) 5.46 4.73 5.19 5.45 4.60 4.11

      Recovery

      The recovery of Human IL-2 spiked at three different levels in samples throughout the range of the assay was evaluated in various matrices.

      Sample Type Range (%) Average Recovery (%)
      Serum (n=5) 87-101 93
      EDTA plasma (n=5) 93-104 100
      Cell culture media (n=5) 93-102 99

      Linearity

      Samples were spiked with high concentrations of Human IL-2 and diluted with Reference Standard & Sample Diluent to produce samples with values within the range of the assay.

      Serum (n=5) EDTA plasma (n=5) Cell culture media (n=5)
      1:2 Range (%) 95-109 96-111 92-105
      Average (%) 103 103 98
      1:4 Range (%) 96-111 88-98 99-109
      Average (%) 104 95 104
      1:8 Range (%) 102-113 91-97 96-111
      Average (%) 105 94 104
      1:16 Range (%) 89-101 88-104 94-107
      Average (%) 95 96 101

      Kit components & Storage

      An unopened kit can be stored at 4℃ for 1 month. If the kit is not used within 1 month, store the items separately according to the following conditions once the kit is received.

      Item Specifications Storage
      Micro ELISA Plate(Dismountable) 8 wells ×12 strips -20℃, 6 months
      Reference Standard 2 vials
      Concentrated Biotinylated Detection Ab (100×) 1 vial, 120 μL
      Concentrated HRP Conjugate (100×) 1 vial, 120 μL -20℃(shading light), 6 months
      Reference Standard & Sample Diluent 1 vial, 20 mL 4℃, 6 months
      Biotinylated Detection Ab Diluent 1 vial, 14 mL
      HRP Conjugate Diluent 1 vial, 14 mL
      Concentrated Wash Buffer (25×) 1 vial, 30 mL
      Substrate Reagent 1 vial, 10 mL 4℃(shading light)
      Stop Solution 1 vial, 10 mL 4℃
      Plate Sealer 5 pieces
      Product Description 1 copy
      Certificate of Analysis 1 copy

      Note: All reagent bottle caps must be tightened to prevent evaporation and microbial pollution.
      The volume of reagents in partial shipments is a little more than the volume marked on the label, please use accurate measuring equipment instead of directly pouring into the vial(s).

      Other supplies required

      • Microplate reader with 450 nm wavelength filter
      • High-precision transfer pipette, EP tubes and disposable pipette tips
      • Incubator capable of maintaining 37℃
      • Deionized or distilled water
      • Absorbent paper
      • Loading slot for Wash Buffer

      Assay Procedure

      1.Add 100 μL standard or sample to each well. Incubate for 90 min at 37℃.

      2.Remove the liquid.

      3.Add 100 μL Biotinylated Detection Ab. Incubate for 1 hour at 37℃. Aspirate and wash 3 times.

      4.Add 100 μL HRP Conjugate. Incubate for 30 min at 37℃. Aspirate and wash 5 times.

      5.Add 90 μL of Substrate Reagent. Incubate for 15 min at 37℃.

      6.Add 50 μL Stop Solution.

      7.Read at 450 nm immediately. Calculation of results.

      Citations

      1. Publication: Li W, Dong H, Huang Y, et al. Clonorchis Sinensis Co-Infection Could Affect The Disease State And Treatment Response Of Hbv Patients[J]. Plos Neglected Tropical Diseases, 2016.
        Sample Type: Culture supernatants and Serum
      2. Publication: Zeng Z P, Wang K, Li Y Y, et al. Down-Regulation Of MicroRNA-451a Facilitates The Activation And Proliferation Of CD4+ T Cells By Targeting Myc In Patients With Dilated Cardiomyopathy[J]. The Journal of Biological Chemistry, 2016.
        Sample Type: culture supernatant
      3. Publication: Zhou N, Fu Z, Li H, et al. Ketamine, As Adjuvant Analgesics For Patients With Refractory Cancer Pain, Does Affect IL-2/IFN-γ Expression Of T Cells In Vitro? A Prospective, Randomized, Double-Blind Study[J]. Medicine, 2017.
        Sample Type: culture supernatant
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