Competitive ELISA Kits

In a competitive format assay, as antigen concentration in a sample increases, signal intensity decreases.The central concept behind a competitive ELISA is that a larger quantity of analyte in a sample results in fewer free antibodies in solution and by extension a smaller number of labeled antibodies bound to the standard on the plate.

A primary antibody (unlabeled) is incubated with sample antigen. They are then added to 96-well plates which are pre-coated with the same antigen, followed by a washing step. Antigen quantity in the sample determines the amount antibody binding on the well. The secondary antibody that is specific to the primary antibody and conjugated with an enzyme is added. A substrate is added, and remaining enzymes elicit a chromogenic or fluorescent signal. The competitive assay is an appealing option if no suitable antibody pair can be identified for sandwich ELISA, or if the analyte in question is too small to permit binding of both a capture and detection antibody. Our support team will gladly help you with finding the right ELISA kit for your needs. Please contact us via phone, email or use our live chat system.All ELISA Kits

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31,440 Products
Pre-coated, Quantitative, Colorimetric, Samples: Cell Culture Supernatant, Cell Lysate, Plasma, Serum, Tissue Homogenate
ReactivityAll Species
Detection Range12.35 ng/mL - 1000 ng/mL
Order details Cat. No. ABIN6574100
$947.37
96 tests
Plus shipping costs $45.00
Delivery in 12 to 14 Business Days
Pre-coated, Quantitative, Colorimetric, Samples: Serum, Urine
ReactivityHuman
Detection Range0.025-10 μg/mL
Order details Cat. No. ABIN365026
» Show selected B2M ELISA Kits with more information such as references or interaction partners.
$633.11
Plus shipping costs $45.00
Delivery in 13 to 16 Business Days
Pre-coated, Quantitative, Colorimetric, Samples: Serum, Plasma, Saliva, Cell Culture Supernatant, Tissue Homogenate
ReactivityHuman
Detection Range0.312-20 ng/mL
Order details Cat. No. ABIN1690717
$666.11
Plus shipping costs $45.00
Delivery in 13 to 16 Business Days
Pre-coated, Quantitative, Colorimetric, Samples: Plasma, Serum
ReactivityMouse (Murine)
Detection Range49.4 pg/mL - 4000 pg/mL
Order details Cat. No. ABIN415519
$682.11
Plus shipping costs $45.00
Delivery in 13 to 16 Business Days
Pre-coated, Quantitative, Colorimetric, Samples: Plasma, Serum
ReactivityChemical
Detection Range1.563-100 μg/mL
Order details Cat. No. ABIN1884657
$544.50
96 tests
Plus shipping costs $45.00
Delivery in 12 to 14 Business Days
Pre-coated, Quantitative, Colorimetric, Samples: Urine
ReactivityMouse (Murine), Rat (Rattus)
Order details Cat. No. ABIN1721161
$605.00
96 tests
Plus shipping costs $45.00
Delivery in 1 to 2 Business Days
Pre-coated, Quantitative, Colorimetric, Samples: Cell Culture Supernatant, Cell Lysate, Plasma, Serum, Tissue Homogenate
ReactivityHuman
Detection Range185.2 pg/mL - 15000 pg/mL
Order details Cat. No. ABIN6574075
» Show selected AMH ELISA Kits with more information such as references or interaction partners.
$663.16
96 tests
Plus shipping costs $45.00
Delivery in 12 to 14 Business Days
Pre-coated, Quantitative, Colorimetric, Samples: Cell Culture Supernatant, Cell Lysate, Plasma, Serum, Tissue Homogenate
ReactivityAll Species
Detection Range12.35 pg/mL - 1000 pg/mL
Order details Cat. No. ABIN6574085
$418.95
96 tests
Plus shipping costs $45.00
Delivery in 12 to 14 Business Days
Pre-coated, Quantitative, Colorimetric, Samples: Urine, Cell Lysate, Plasma, Sample Matrices
ReactivityAll Species
Detection Range0.94 ng/mL - 60 ng/mL
Order details Cat. No. ABIN2964843
$524.04
Plus shipping costs $45.00
Delivery in 3 to 4 Business Days
Pre-coated, Quantitative, Colorimetric, Samples: Plant Tissue
ReactivityPlant
Detection Range0.156-10 μg/mL
Order details Cat. No. ABIN368385
$543.89
Plus shipping costs $45.00
Delivery in 13 to 16 Business Days
Uncoated, Quantitative, Colorimetric, Samples: Urine, Plasma, Cell Samples, Serum, Tissue Samples
ReactivityOthers
Order details Cat. No. ABIN2344960
$863.50
Plus shipping costs $45.00
Delivery in 2 to 3 Business Days
Pre-coated, Quantitative, Colorimetric, Samples: Cell Culture Supernatant, Cell Lysate, Plasma, Serum, Tissue Homogenate
ReactivityRabbit
Detection Range1.23 μg/mL - 100 μg/mL
Order details Cat. No. ABIN6574090
$440.00
96 tests
Plus shipping costs $45.00
Delivery in 12 to 14 Business Days
Pre-coated, Quantitative, Colorimetric, Samples: Plasma, Serum
ReactivityAll Species
Detection Range3.7 ng/mL - 300 ng/mL
Order details Cat. No. ABIN6574082
$572.63
96 tests
Plus shipping costs $45.00
Delivery in 12 to 14 Business Days
Pre-coated, Quantitative, Colorimetric, Samples: Cell Culture Supernatant, Cell Lysate, Plasma, Serum, Tissue Homogenate
ReactivityHuman
Detection Range24.69 pg/mL - 2000 pg/mL
Order details Cat. No. ABIN6574089
» Show selected BNP ELISA Kits with more information such as references or interaction partners.
$663.16
96 tests
Plus shipping costs $45.00
Delivery in 12 to 14 Business Days
Pre-coated, Quantitative, Colorimetric, Samples: Cell Culture Supernatant, Cell Lysate, Plasma, Serum, Tissue Homogenate
ReactivityHuman
Detection Range12.35 pg/mL - 1000 pg/mL
Order details Cat. No. ABIN6574074
» Show selected ADM ELISA Kits with more information such as references or interaction partners.
$663.16
96 tests
Plus shipping costs $45.00
Delivery in 12 to 14 Business Days
Pre-coated, Quantitative, Colorimetric, Samples: Cell Culture Supernatant, Cell Lysate, Plasma, Serum, Tissue Homogenate
ReactivityHuman
Detection Range625 ng/mL - 10000 ng/mL
Order details Cat. No. ABIN6574095
$663.16
96 tests
Plus shipping costs $45.00
Delivery in 12 to 14 Business Days
Pre-coated, Quantitative, Colorimetric, Samples: Plasma, Serum
ReactivityMouse (Murine)
Detection Range370.4 pg/mL - 30000 pg/mL
Order details Cat. No. ABIN6574077
$682.11
96 tests
Plus shipping costs $45.00
Delivery in 12 to 14 Business Days
Pre-coated, Quantitative, Colorimetric, Samples: Cell Culture Supernatant, Cell Lysate, Plasma, Serum, Tissue Homogenate
ReactivityHuman
Detection Range617.3 pg/mL - 50000 pg/mL
Order details Cat. No. ABIN6574101
» Show selected MSTN ELISA Kits with more information such as references or interaction partners.
$700.00
96 tests
Plus shipping costs $45.00
Delivery in 12 to 14 Business Days
Pre-coated, Quantitative, Colorimetric, Samples: Plasma, Serum
ReactivityRat (Rattus)
Detection Range98.77 pg/mL - 8000 pg/mL
Order details Cat. No. ABIN6574078
$720.00
96 tests
Plus shipping costs $45.00
Delivery in 12 to 14 Business Days
Pre-coated, Quantitative, Colorimetric, Samples: Plasma, Serum
ReactivityAll Species
Detection Range12.35 pg/mL - 1000 pg/mL
Order details Cat. No. ABIN6574097
$837.89
96 tests
Plus shipping costs $45.00
Delivery in 12 to 14 Business Days
Pre-coated, Quantitative, Colorimetric, Samples: Cell Culture Supernatant, Cell Lysate, Plasma, Serum
ReactivityAll Species
Detection Range61.7 pg/mL - 5000 pg/mL
Order details Cat. No. ABIN6574096
$837.89
96 tests
Plus shipping costs $45.00
Delivery in 12 to 14 Business Days
Pre-coated, Quantitative, Colorimetric, Samples: Plasma, Serum, Urine
ReactivityAll Species
Detection Range1.23 ng/mL - 100 ng/mL
Order details Cat. No. ABIN6574088
» Show selected CORT ELISA Kits with more information such as references or interaction partners.
$837.89
96 tests
Plus shipping costs $45.00
Delivery in 12 to 14 Business Days
Pre-coated, Quantitative, Colorimetric, Samples: Plasma, Serum
ReactivityAll Species
Detection Range1.23 ng/mL - 100 ng/mL
Order details Cat. No. ABIN6574084
$837.89
96 tests
Plus shipping costs $45.00
Delivery in 12 to 14 Business Days
Uncoated, Quantitative, Colorimetric, Samples: Plasma, Serum
ReactivityOthers
Order details Cat. No. ABIN2344951
$709.50
Plus shipping costs $45.00
Delivery in 2 to 3 Business Days
Pre-coated, Quantitative, Colorimetric, Samples: Urine
ReactivityHuman
Detection Range0.5-200 ng/mL
Order details Cat. No. ABIN1020374
$1,001.51
96 tests
Plus shipping costs $45.00
Delivery in 9 to 11 Business Days
Pre-coated, Quantitative, Colorimetric, Samples: Plasma, Serum, Urine
ReactivityMouse (Murine)
Detection Range3.7 ng/mL - 300 ng/mL
Order details Cat. No. ABIN6574099
» Show selected A2M ELISA Kits with more information such as references or interaction partners.
$530.53
96 tests
Plus shipping costs $45.00
Delivery in 12 to 14 Business Days
Pre-coated, Quantitative, Colorimetric, Samples: Cell Culture Supernatant, Cell Lysate, Plasma, Serum, Tissue Homogenate
ReactivityHuman
Detection Range6.17 pg/mL - 500 pg/mL
Order details Cat. No. ABIN6574094
» Show selected INHBA ELISA Kits with more information such as references or interaction partners.
$663.16
96 tests
Plus shipping costs $45.00
Delivery in 12 to 14 Business Days
Pre-coated, Quantitative, Colorimetric, Samples: Cell Culture Supernatant, Cell Lysate, Plasma, Saliva, Serum, Tissue Homogenate
ReactivityHuman
Detection Range123.5 pg/mL - 10000 pg/mL
Order details Cat. No. ABIN6574098
» Show selected GHRL ELISA Kits with more information such as references or interaction partners.
$663.16
96 tests
Plus shipping costs $45.00
Delivery in 12 to 14 Business Days
Pre-coated, Quantitative, Colorimetric, Samples: Plasma, Serum
ReactivityMouse (Murine)
Detection Range49.4 pg/mL - 4000 pg/mL
Order details Cat. No. ABIN6574086
$682.11
96 tests
Plus shipping costs $45.00
Delivery in 12 to 14 Business Days
Pre-coated, Quantitative, Colorimetric, Samples: Plasma, Serum
ReactivityAll Species
Detection Range11.11 ng/mL - 900 ng/mL
Order details Cat. No. ABIN6574092
$837.89
96 tests
Plus shipping costs $45.00
Delivery in 12 to 14 Business Days