LTB4(Leukotriene B4) ELISA Kit

    • competitive-ELISA-Elabscience
    • competitive-ELISA-Elabscience
    • competitive-ELISA-Elabscience
    <
    >
    • competitive-ELISA-Elabscience
    • competitive-ELISA-Elabscience
    • competitive-ELISA-Elabscience
    • competitive-ELISA-Elabscience
    • competitive-ELISA-Elabscience
    • competitive-ELISA-Elabscience

      Catalog number:E-EL-0061

      Synonyms:Leukotriene B4

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

      Reactivity: Universal

      Detection Range: 15.63~1000 pg/mL

      Sensitivity: 9.38 pg/mL

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

      Add to cart Compare Bulk request

      Intended use

      This ELISA kit applies to the in vitro quantitative determination of  LTB4 concentrations in serum, plasma and other biological fluids.

      Test principle

      This ELISA kit uses the Competitive-ELISA principle. The micro ELISA plate provided in this kit has been pre-coated with LTB4. During the reaction,  LTB4 in the sample or standard competes with a fixed amount of LTB4 on the solid phase supporter for sites on the Biotinylated Detection Ab specific to  LTB4. Excess conjugate and unbound sample or standard are washed from the plate, and Avidin conjugated to Horseradish Peroxidase (HRP) are added to each microplate well and incubated. Then a TMB substrate solution is added to each well. The enzyme-substrate reaction is terminated by the addition of stop solution and the color change is measured spectrophotometrically at a wavelength of 450 nm ± 2 nm. The concentration of  LTB4 in the samples is then determined by comparing the OD of the samples to the standard curve.

      Assay type Competitive
      Format 96T
      Assay time 2.0h
      Reactivity Universal
      Detection Method Colormetric
      Detection Range 15.63—1000 pg/mL
      Sensitivity 9.38 pg/mL
      Sample Volume 50μL
      Sample Type Serum, plasma and other biological fluids

      Specificity

      This kit recognizes LTB4 in samples. No significant cross-reactivity or interference between LTB4 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
      1000 0.332
      0.338
      0.335
      500 0.412
      0.458
      0.435
      250 0.63
      0.606
      0.618
      125 0.902
      0.936
      0.919
      62.5 1.334
      1.326
      1.33
      31.25 1.785
      1.759
      1.772
      15.63 2.135
      2.143
      2.139
      0 2.666
      2.68
      2.673

      Precision

      Intra-assay Precision (Precision within an assay): 3 samples with low, mid range and high level LTB4 were tested 20 times on one plate, respectively.
      Inter-assay Precision (Precision between assays): 3 samples with low, mid range and high level LTB4 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) 54.30 119.20 336.50 50.40 116.60 318.60
      Standard deviation 3.50 5.00 18.20 2.80 4.80 15.30
      C V (%) 6.45 4.19 5.41 5.56 4.12 4.80

      Recovery

      The recovery of  LTB4 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) 89-105 96
      EDTA plasma (n=5) 86-98 91
      Cell culture media (n=5) 93-106 100

      Linearity

      Samples were spiked with high concentrations of LTB4 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 (%) 96-112 91-105 98-110
      Average (%) 103 96 104
      1:4 Range (%) 90-103 89-103 94-110
      Average (%) 95 94 101
      1:8 Range (%) 87-101 88-99 92-106
      Average (%) 93 93 99
      1:16 Range (%) 84-97 86-97 96-114
      Average (%) 89 92 104

      Kit components & Storage

      An unopened kit can be stored at 2-8°C 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°C, 6 months
      Reference Standard 2 vials
      Concentrated Biotinylated Detection Ab (100×) 1 vial, 120 μL
      Concentrated HRP Conjugate (100×) 1 vial, 120 μL -20°C(shading light), 6 months
      Reference Standard & Sample Diluent 1 vial, 20 mL 2-8°C, 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 2-8°C(shading light)
      Stop Solution 1 vial, 10 mL 2-8°C
      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°C
      • Deionized or distilled water
      • Absorbent paper
      • Loading slot for Wash Buffer

      Assay Procedure

      elisa assay procedure 1

      1. Add 50μL standard or sample to the wells, immediately add 50μL Biotinylated Detection Ab working solution to each well. Incubate for 45 min at 37°C

      elisa assay procedure 2

      2. Aspirate and wash the plate for 3 times

      elisa assay procedure 3

      3. Add 100μL HRP conjugate working solution. Incubate for 30 min at 37°C. Aspirate and wash the plate for 5 times

      elisa assay procedure 4

      4. Add 90μL Substrate Reagent. Incubate for 15 min at 37°C

      elisa assay procedure 5

      5. Add 50μL Stop Solution

      elisa assay procedure 6

      6. Read the plate at 450nm immediately. Calculation of the results

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