Competitive ELISA

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.

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Antigen
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Reactivity
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    Competition ELISA
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Analytical Method
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29,708 Products
Pre-coated, Quantitative, Colorimetric, Samples: Serum, Urine
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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
Will be delivered in 13 to 16 Business Days
Pre-coated, Quantitative, Colorimetric, Samples: Serum, Plasma, Biological Fluids
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ReactivityMouse (Murine)
Detection Range49.4-4000 pg/mL
Order details Cat. No. ABIN415519
$545.68
Plus shipping costs $45.00
Will be delivered in 13 to 16 Business Days
Pre-coated, Quantitative, Colorimetric, Samples: Serum, Plasma, Saliva, Cell Culture Supernatant, Tissue Homogenate
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ReactivityHuman
Detection Range0.312-20 ng/mL
Order details Cat. No. ABIN1690717
$666.11
Plus shipping costs $45.00
Will be delivered in 13 to 16 Business Days
Pre-coated, Quantitative, Colorimetric, Samples: Plasma, Serum, Biological Fluids
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ReactivityChemical
Detection Range1.563-100 μg/mL
Order details Cat. No. ABIN1884657
$544.50
96 tests
Plus shipping costs $45.00
Will be delivered in 12 to 14 Business Days
Pre-coated, Quantitative, Colorimetric, Samples: Urine
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ReactivityChemical
Order details Cat. No. ABIN1721161
$605.00
96 tests
Plus shipping costs $45.00
Will be delivered in 1 to 2 Business Days
Pre-coated, Quantitative, Colorimetric, Samples: Serum, Plasma, Cell Culture Supernatant, Body Fluids, Tissue Homogenate
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ReactivityHuman
Detection Range50-1000 μg/mL
Order details Cat. No. ABIN510001
$707.14
96 tests
Plus shipping costs $45.00
Will be delivered in 15 to 18 Business Days
Pre-coated, Quantitative, Colorimetric, Samples: Cell Culture Supernatant, Serum
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ReactivityHuman, Mouse (Murine), Rat (Rattus)
Detection Range0.1-1.000 pg/mL
Order details Cat. No. ABIN1979095
» Show selected NPPB ELISA Kits with more information such as references or interaction partners.
$452.10
Plus shipping costs $45.00
Will be delivered in 2 to 3 Business Days
Pre-coated, Quantitative, Colorimetric, Samples: Serum, Plasma, Tissue Homogenate
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ReactivityRat (Rattus)
Detection Range0.2-15 ng/mL
Order details Cat. No. ABIN367547
» Show selected AMH ELISA Kits with more information such as references or interaction partners.
$1,026.67
Plus shipping costs $45.00
Will be delivered in 13 to 16 Business Days
Pre-coated, Quantitative, Colorimetric, Samples: Serum, Plasma, Tissue Homogenate
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ReactivityHuman
Detection Range1.25-20 μg/mL
Order details Cat. No. ABIN366856
» Show selected A2M ELISA Kits with more information such as references or interaction partners.
$1,026.67
Plus shipping costs $45.00
Will be delivered in 13 to 16 Business Days
Pre-coated, Quantitative, Colorimetric, Samples: Serum, Plasma, Tissue Homogenate
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ReactivityHuman
Detection Range15.6-1000 ng/mL
Order details Cat. No. ABIN367603
» Show selected RBP4 ELISA Kits with more information such as references or interaction partners.
$1,081.67
Plus shipping costs $45.00
Will be delivered in 13 to 16 Business Days
Pre-coated, Quantitative, Colorimetric, Samples: Serum, Plasma, Tissue Homogenate
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ReactivityRat (Rattus)
Detection Range0.5-100 pg/mL
Order details Cat. No. ABIN368080
» Show selected INHA ELISA Kits with more information such as references or interaction partners.
$1,107.33
Plus shipping costs $45.00
Will be delivered in 13 to 16 Business Days
Pre-coated, Quantitative, Colorimetric, Samples: Serum, Plasma, Biological Fluids
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ReactivityRat (Rattus)
Detection Range1.23-100 pg/mL
Order details Cat. No. ABIN431543
» Show selected ACTH ELISA Kits with more information such as references or interaction partners.
$512.00
Plus shipping costs $45.00
Will be delivered in 13 to 16 Business Days
Pre-coated, Quantitative, Colorimetric, Samples: Serum, Plasma, Tissue Homogenate, Cell Lysate, Cell Culture Supernatant, Biological Fluids
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ReactivityHuman
Detection Range12.35-1000 pg/mL
Order details Cat. No. ABIN1873307
» Show selected UTS2 ELISA Kits with more information such as references or interaction partners.
$530.53
Plus shipping costs $45.00
Will be delivered in 13 to 16 Business Days
Pre-coated, Quantitative, Colorimetric, Samples: Serum, Plasma, Tissue Homogenate, Cell Lysate, Cell Culture Supernatant, Biological Fluids
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ReactivityMouse (Murine)
Detection Range6.17-500 pg/mL
Order details Cat. No. ABIN1873311
» Show selected Vip ELISA Kits with more information such as references or interaction partners.
$545.68
Plus shipping costs $45.00
Will be delivered in 13 to 16 Business Days
Pre-coated, Quantitative, Colorimetric, Samples: Biological Fluids, Cell Culture Supernatant, Cell Lysate, Plasma, Serum, Tissue Homogenate
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ReactivityMouse (Murine)
Detection Range12.35-1.000 pg/mL
Order details Cat. No. ABIN425747
» Show selected KISS1 ELISA Kits with more information such as references or interaction partners.
$606.32
Plus shipping costs $45.00
Will be delivered in 13 to 16 Business Days
Pre-coated, Quantitative, Colorimetric, Samples: Serum, Plasma, Tissue Homogenate, Cell Lysate, Cell Culture Supernatant, Biological Fluids
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ReactivityPig (Porcine), Wild boar (Sus scrofa)
Detection Range123.5-10000 pg/mL
Order details Cat. No. ABIN572365
» Show selected GHRL ELISA Kits with more information such as references or interaction partners.
$636.63
Plus shipping costs $45.00
Will be delivered in 13 to 16 Business Days
Pre-coated, Quantitative, Colorimetric, Samples: Serum, Plasma, Tissue Homogenate
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ReactivityRat (Rattus)
Detection Range125-8000 ng/mL
Order details Cat. No. ABIN368004
» Show selected AHSG ELISA Kits with more information such as references or interaction partners.
$1,081.67
Plus shipping costs $45.00
Will be delivered in 13 to 16 Business Days
Pre-coated, Quantitative, Colorimetric, Samples: Serum, Plasma
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ReactivityCow (Bovine)
Detection Range20-8000 μIU/mL
Order details Cat. No. ABIN578143
» Show selected PRL ELISA Kits with more information such as references or interaction partners.
$1,107.33
Plus shipping costs $45.00
Will be delivered in 13 to 16 Business Days
Pre-coated, Quantitative, Colorimetric, Samples: Serum, Plasma
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ReactivityMouse (Murine)
Detection Range2.4-10000 pg/mL
Order details Cat. No. ABIN2506981
» Show selected AVP ELISA Kits with more information such as references or interaction partners.
$411.40
96 tests
Plus shipping costs $45.00
Will be delivered in 3 to 4 Business Days
Pre-coated, Quantitative, Colorimetric, Samples: Serum, Plasma
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ReactivityCow (Bovine)
Detection Range2.4-10000 pg/mL
Order details Cat. No. ABIN2506989
» Show selected AVP ELISA Kits with more information such as references or interaction partners.
$411.40
96 tests
Plus shipping costs $45.00
Will be delivered in 3 to 4 Business Days
Pre-coated, Quantitative, Colorimetric, Samples: Serum, Plasma
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ReactivityCow (Bovine)
Detection Range0.024-100 ng/mL
Order details Cat. No. ABIN2506986
» Show selected OXT ELISA Kits with more information such as references or interaction partners.
$411.40
96 tests
Plus shipping costs $45.00
Will be delivered in 3 to 4 Business Days
Pre-coated, Quantitative, Colorimetric, Samples: Serum, Plasma
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ReactivityRat (Rattus)
Detection Range2.4-10000 pg/mL
Order details Cat. No. ABIN2506985
» Show selected AVP ELISA Kits with more information such as references or interaction partners.
$411.40
96 tests
Plus shipping costs $45.00
Will be delivered in 3 to 4 Business Days
Pre-coated, Quantitative, Colorimetric, Samples: Serum, Plasma
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ReactivityRat (Rattus)
Detection Range0.024-100 ng/mL
Order details Cat. No. ABIN2506982
» Show selected OXT ELISA Kits with more information such as references or interaction partners.
$411.40
96 tests
Plus shipping costs $45.00
Will be delivered in 3 to 4 Business Days
Pre-coated, Quantitative, Colorimetric, Samples: Serum, Plasma
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ReactivityHuman
Detection Range0.024-100 ng/mL
Order details Cat. No. ABIN2506974
» Show selected OXT ELISA Kits with more information such as references or interaction partners.
$411.40
96 tests
Plus shipping costs $45.00
Will be delivered in 3 to 4 Business Days
Pre-coated, Quantitative, Colorimetric, Samples: Serum, Plasma
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ReactivityHuman
Detection Range2.4-10000 pg/mL
Order details Cat. No. ABIN2506977
» Show selected AVP ELISA Kits with more information such as references or interaction partners.
$411.40
96 tests
Plus shipping costs $45.00
Will be delivered in 3 to 4 Business Days
Pre-coated, Quantitative, Colorimetric, Samples: Serum, Plasma, Tissue Homogenate, Cell Lysate, Cell Culture Supernatant, Biological Fluids
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ReactivityHuman
Detection Range246.9-20000 ng/mL
Order details Cat. No. ABIN1873426
» Show selected ALB ELISA Kits with more information such as references or interaction partners.
$325.05
Plus shipping costs $45.00
Will be delivered in 13 to 16 Business Days
Pre-coated, Quantitative, Colorimetric, Samples: Cell Culture Supernatant, Serum
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ReactivityHuman, Mouse (Murine), Rat (Rattus)
Detection Range1-10.000 pg/mL
Order details Cat. No. ABIN1979257
» Show selected SERPINA12 ELISA Kits with more information such as references or interaction partners.
Pubmed
ISO
$452.10
Plus shipping costs $45.00
Will be delivered in 2 to 3 Business Days
Pre-coated, Quantitative, Colorimetric, Samples: Cell Culture Supernatant, Serum
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ReactivityHuman, Mouse (Murine), Rat (Rattus)
Detection Range1-10.000 pg/mL
Order details Cat. No. ABIN1979260
» Show selected SERPINA12 ELISA Kits with more information such as references or interaction partners.
Pubmed
ISO
$452.10
Plus shipping costs $45.00
Will be delivered in 2 to 3 Business Days
Pre-coated, Quantitative, Colorimetric, Samples: Cell Culture Supernatant, Serum
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ReactivityHuman, Mouse (Murine), Rat (Rattus)
Detection Range0.1-1.000 pg/mL
Order details Cat. No. ABIN1979167
» Show selected GAST ELISA Kits with more information such as references or interaction partners.
Pubmed
ISO
$452.10
Plus shipping costs $45.00
Will be delivered in 2 to 3 Business Days
Pre-coated, Quantitative, Colorimetric, Samples: Cell Culture Supernatant, Serum
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ReactivityHuman, Mouse (Murine), Rat (Rattus)
Detection Range0.1-1.000 pg/mL
Order details Cat. No. ABIN1979173
» Show selected GAST ELISA Kits with more information such as references or interaction partners.
Pubmed
ISO
$452.10
Plus shipping costs $45.00
Will be delivered in 2 to 3 Business Days
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