info@stjohnslabs.com

+44 (0)208 223 3081

USD

Search

Compare
Login / Register
View Cart

Search

All
Primary antibodies
Secondary antibodies
Nanobodies
Kits
- Antibody Pairs
Proteins
Trial Size Antibodies
Blog
Company
- St John's Laboratory Guarantee
- Contact Us

USD
Compare
Login Register

Home
All
Kits
ELISA Kits
Competitive ELISA Kits

All

Refine by

No filters applied

Browse by Size, Reactivity & more Hide Filters Show Filters

Enter the minimum price to filter products by

Enter the maximum price to filter products by

Competitive ELISA Kits

This type of assay is used to measure the antigen concentration via signal interference detection.

Show

Show

Sort By:

Universal AA (Arachidonic Acid) Ready-To-Use Competitive ELISA Kit (STJE0013177)

Applications :

ELISA

Reactivity :

Universal

MSRP:

Was:

Now: $590.63 - $806.63

Choose Options
Universal ACH (Acetylcholine) Competitive ELISA Kit (STJE0006847)

Applications :

ELISA

Reactivity :

Universal

MSRP:

Was:

Now: $567.68 - $771.53

Choose Options
Universal ACH (Acetylcholine) Ready-To-Use Competitive ELISA Kit (STJE0013223)

Applications :

ELISA

Reactivity :

Universal

MSRP:

Was:

Now: $590.63 - $806.63

Choose Options
Universal ADMA (Asymmetrical Dimethylarginine) Competitive ELISA Kit (STJE0006939)

Applications :

ELISA

Reactivity :

Universal

MSRP:

Was:

Now: $590.63 - $806.63

Choose Options
Universal ADMA (Asymmetrical Dimethylarginine) Ready-To-Use Competitive ELISA Kit (STJE0013315)

Applications :

ELISA

Reactivity :

Universal

MSRP:

Was:

Now: $616.28 - $841.73

Choose Options
Universal ADP (Adenosine Diphosphate) Competitive ELISA Kit (STJE0006950)

Applications :

ELISA

Reactivity :

Universal

MSRP:

Was:

Now: $590.63 - $806.63

Choose Options
Universal ADP (Adenosine Diphosphate) Ready-To-Use Competitive ELISA Kit (STJE0013326)

Applications :

ELISA

Reactivity :

Universal

MSRP:

Was:

Now: $616.28 - $841.73

Choose Options
Universal ADT (Androsterone) Competitive ELISA Kit (STJE0006970)

Applications :

ELISA

Reactivity :

Universal

MSRP:

Was:

Now: $567.68 - $771.53

Choose Options
Universal ADT (Androsterone) Ready-To-Use Competitive ELISA Kit (STJE0013346)

Applications :

ELISA

Reactivity :

Universal

MSRP:

Was:

Now: $590.63 - $806.63

Choose Options
Universal AED (Androstenediol) Competitive ELISA Kit (STJE0006972)

Applications :

ELISA

Reactivity :

Universal

MSRP:

Was:

Now: $567.68 - $771.53

Choose Options
Universal AED (Androstenediol) Ready-To-Use Competitive ELISA Kit (STJE0013348)

Applications :

ELISA

Reactivity :

Universal

MSRP:

Was:

Now: $590.63 - $806.63

Choose Options
Universal AGE (Advanced Glycation End Product) Competitive ELISA Kit (STJE0006990)

Applications :

ELISA

Reactivity :

Universal

MSRP:

Was:

Now: $635.18 - $870.08

Choose Options
Universal AGE (Advanced Glycation End Product) Ready-To-Use Competitive ELISA Kit (STJE0013366)

Applications :

ELISA

Reactivity :

Universal

MSRP:

Was:

Now: $590.63 - $806.63

Choose Options
Universal ALD (Aldosterone) Competitive ELISA Kit (STJE0007047)

Applications :

ELISA

Reactivity :

Universal

MSRP:

Was:

Now: $567.68 - $771.53

Choose Options
Universal ALD (Aldosterone) Ready-To-Use Competitive ELISA Kit (STJE0013423)

Applications :

ELISA

Reactivity :

Universal

MSRP:

Was:

Now: $590.63 - $806.63

Choose Options
Universal AP (Allopregnanolone) Competitive ELISA Kit (STJE0007194)

Applications :

ELISA

Reactivity :

Universal

MSRP:

Was:

Now: $590.63 - $806.63

Choose Options
Universal AP (Allopregnanolone) Ready-To-Use Competitive ELISA Kit (STJE0013570)

Applications :

ELISA

Reactivity :

Universal

MSRP:

Was:

Now: $616.28 - $841.73

Choose Options
Universal ASD (Androstenedione) Competitive ELISA Kit (STJE0007332)

Applications :

ELISA

Reactivity :

Universal

MSRP:

Was:

Now: $567.68 - $771.53

Choose Options
Universal ASD (Androstenedione) Ready-To-Use Competitive ELISA Kit (STJE0013708)

Applications :

ELISA

Reactivity :

Universal

MSRP:

Was:

Now: $590.63 - $806.63

Choose Options
Universal BH4 (Tetrahydrobiopterin) Competitive ELISA Kit (STJE0019860)

Applications :

ELISA

Reactivity :

Universal

MSRP:

Was:

Now: $220.73 - $482.63

Choose Options
Universal BSA (Bovine Serum Albumin) Competitive ELISA Kit (STJE0007550)

Applications :

ELISA

Reactivity :

Universal

MSRP:

Was:

Now: $635.18 - $870.08

Choose Options
Universal BSA (Bovine Serum Albumin) Ready-To-Use Competitive ELISA Kit (STJE0013926)

Applications :

ELISA

Reactivity :

Universal

MSRP:

Was:

Now: $590.63 - $806.63

Choose Options
Universal cAMP (Cyclic Adenosine Monophosphate) Competitive ELISA Kit (STJE0007661)

Applications :

ELISA

Reactivity :

Universal

MSRP:

Was:

Now: $497.48 - $672.98

Choose Options
Universal cAMP (Cyclic Adenosine Monophosphate) Ready-To-Use Competitive ELISA Kit (STJE0014036)

Applications :

ELISA

Reactivity :

Universal

MSRP:

Was:

Now: $517.73 - $701.33

Choose Options
Universal CAR (Carnosine) Competitive ELISA Kit (STJE0007679)

Applications :

ELISA

Reactivity :

Universal

MSRP:

Was:

Now: $590.63 - $806.63

Choose Options
Universal CAR (Carnosine) Ready-To-Use Competitive ELISA Kit (STJE0014054)

Applications :

ELISA

Reactivity :

Universal

MSRP:

Was:

Now: $616.28 - $841.73

Choose Options
Universal cGMP (Cyclic Guanosine Monophosphate) Competitive ELISA Kit (STJE0007909)

Applications :

ELISA

Reactivity :

Universal

MSRP:

Was:

Now: $567.68 - $771.53

Choose Options
Universal cGMP (Cyclic Guanosine Monophosphate) Ready-To-Use Competitive ELISA Kit (STJE0014284)

Applications :

ELISA

Reactivity :

Universal

MSRP:

Was:

Now: $590.63 - $806.63

Choose Options
Universal CML (Carboxymethyl Lysine) Competitive ELISA Kit (STJE0008001)

Applications :

ELISA

Reactivity :

Universal

MSRP:

Was:

Now: $567.68 - $771.53

Choose Options
Universal CML (Carboxymethyl Lysine) Ready-To-Use Competitive ELISA Kit (STJE0014377)

Applications :

ELISA

Reactivity :

Universal

MSRP:

Was:

Now: $590.63 - $806.63

Choose Options
Universal Cor (Cortisol) Competitive ELISA Kit (STJE0008081)

Applications :

ELISA

Reactivity :

Universal

MSRP:

Was:

Now: $567.68 - $771.53

Choose Options
Universal Cor (Cortisol) Ready-To-Use Competitive ELISA Kit (STJE0014457)

Applications :

ELISA

Reactivity :

Universal

MSRP:

Was:

Now: $590.63 - $806.63

Choose Options
Universal Cor (Cortisone) Competitive ELISA Kit (STJE0008076)

Applications :

ELISA

Reactivity :

Universal

MSRP:

Was:

Now: $567.68 - $771.53

Choose Options
Universal Cor (Cortisone) Ready-To-Use Competitive ELISA Kit (STJE0014452)

Applications :

ELISA

Reactivity :

Universal

MSRP:

Was:

Now: $590.63 - $806.63

Choose Options
Universal Cort (Corticosterone) Competitive ELISA Kit (STJE0008079)

Applications :

ELISA

Reactivity :

Universal

MSRP:

Was:

Now: $567.68 - $771.53

Choose Options
Universal Cort (Corticosterone) Ready-To-Use Competitive ELISA Kit (STJE0014455)

Applications :

ELISA

Reactivity :

Universal

MSRP:

Was:

Now: $590.63 - $806.63

Choose Options
Universal Creatinine (Creatinine) Competitive ELISA Kit (STJE0008174)

Applications :

ELISA

Reactivity :

Universal

MSRP:

Was:

Now: $567.68 - $771.53

Choose Options
Universal Creatinine (Creatinine) Ready-To-Use Competitive ELISA Kit (STJE0014550)

Applications :

ELISA

Reactivity :

Universal

MSRP:

Was:

Now: $590.63 - $806.63

Choose Options
Universal DA (Dopamine) Competitive ELISA Kit (STJE0008340)

Applications :

ELISA

Reactivity :

Universal

MSRP:

Was:

Now: $567.68 - $771.53

Choose Options
Universal DA (Dopamine) Ready-To-Use Competitive ELISA Kit (STJE0014717)

Applications :

ELISA

Reactivity :

Universal

MSRP:

Was:

Now: $590.63 - $806.63

Choose Options
Universal DDAVP (1-Desamino 8D Arginine Vasopressin) Competitive ELISA Kit (STJE0008383)

Applications :

ELISA

Reactivity :

Universal

MSRP:

Was:

Now: $590.63 - $806.63

Choose Options
Universal DDAVP (1-Desamino 8D Arginine Vasopressin) Ready-To-Use Competitive ELISA Kit (STJE0014760)

Applications :

ELISA

Reactivity :

Universal

MSRP:

Was:

Now: $616.28 - $841.73

Choose Options
Universal DHVD3 (1, 25-Dihydroxyvitamin D3) Competitive ELISA Kit (STJE0008430)

Applications :

ELISA

Reactivity :

Universal

MSRP:

Was:

Now: $567.68 - $771.53

Choose Options
Universal DHVD3 (1, 25-Dihydroxyvitamin D3) Ready-To-Use Competitive ELISA Kit (STJE0014807)

Applications :

ELISA

Reactivity :

Universal

MSRP:

Was:

Now: $590.63 - $806.63

Choose Options
Universal E1 (Estrone) Competitive ELISA Kit (STJE0008543)

Applications :

ELISA

Reactivity :

Universal

MSRP:

Was:

Now: $590.63 - $806.63

Choose Options
Universal E1 (Estrone) Ready-To-Use Competitive ELISA Kit (STJE0014921)

Applications :

ELISA

Reactivity :

Universal

MSRP:

Was:

Now: $616.28 - $841.73

Choose Options
Universal E1S (Estrone Sulfate) Competitive ELISA Kit (STJE0008544)

Applications :

ELISA

Reactivity :

Universal

MSRP:

Was:

Now: $567.68 - $771.53

Choose Options
Universal E1S (Estrone Sulfate) Ready-To-Use Competitive ELISA Kit (STJE0014922)

Applications :

ELISA

Reactivity :

Universal

MSRP:

Was:

Now: $590.63 - $806.63

Choose Options

Universal AA (Arachidonic Acid) Ready-To-Use Competitive ELISA Kit (STJE0013177)

Applications :

ELISA

Reactivity :

Universal

MSRP:

Was:

Now: $590.63 - $806.63

Choose Options
Universal ACH (Acetylcholine) Competitive ELISA Kit (STJE0006847)

Applications :

ELISA

Reactivity :

Universal

MSRP:

Was:

Now: $567.68 - $771.53

Choose Options
Universal ACH (Acetylcholine) Ready-To-Use Competitive ELISA Kit (STJE0013223)

Applications :

ELISA

Reactivity :

Universal

MSRP:

Was:

Now: $590.63 - $806.63

Choose Options
Universal ADMA (Asymmetrical Dimethylarginine) Competitive ELISA Kit (STJE0006939)

Applications :

ELISA

Reactivity :

Universal

MSRP:

Was:

Now: $590.63 - $806.63

Choose Options
Universal ADMA (Asymmetrical Dimethylarginine) Ready-To-Use Competitive ELISA Kit (STJE0013315)

Applications :

ELISA

Reactivity :

Universal

MSRP:

Was:

Now: $616.28 - $841.73

Choose Options
Universal ADP (Adenosine Diphosphate) Competitive ELISA Kit (STJE0006950)

Applications :

ELISA

Reactivity :

Universal

MSRP:

Was:

Now: $590.63 - $806.63

Choose Options
Universal ADP (Adenosine Diphosphate) Ready-To-Use Competitive ELISA Kit (STJE0013326)

Applications :

ELISA

Reactivity :

Universal

MSRP:

Was:

Now: $616.28 - $841.73

Choose Options
Universal ADT (Androsterone) Competitive ELISA Kit (STJE0006970)

Applications :

ELISA

Reactivity :

Universal

MSRP:

Was:

Now: $567.68 - $771.53

Choose Options
Universal ADT (Androsterone) Ready-To-Use Competitive ELISA Kit (STJE0013346)

Applications :

ELISA

Reactivity :

Universal

MSRP:

Was:

Now: $590.63 - $806.63

Choose Options
Universal AED (Androstenediol) Competitive ELISA Kit (STJE0006972)

Applications :

ELISA

Reactivity :

Universal

MSRP:

Was:

Now: $567.68 - $771.53

Choose Options
Universal AED (Androstenediol) Ready-To-Use Competitive ELISA Kit (STJE0013348)

Applications :

ELISA

Reactivity :

Universal

MSRP:

Was:

Now: $590.63 - $806.63

Choose Options
Universal AGE (Advanced Glycation End Product) Competitive ELISA Kit (STJE0006990)

Applications :

ELISA

Reactivity :

Universal

MSRP:

Was:

Now: $635.18 - $870.08

Choose Options
Universal AGE (Advanced Glycation End Product) Ready-To-Use Competitive ELISA Kit (STJE0013366)

Applications :

ELISA

Reactivity :

Universal

MSRP:

Was:

Now: $590.63 - $806.63

Choose Options
Universal ALD (Aldosterone) Competitive ELISA Kit (STJE0007047)

Applications :

ELISA

Reactivity :

Universal

MSRP:

Was:

Now: $567.68 - $771.53

Choose Options
Universal ALD (Aldosterone) Ready-To-Use Competitive ELISA Kit (STJE0013423)

Applications :

ELISA

Reactivity :

Universal

MSRP:

Was:

Now: $590.63 - $806.63

Choose Options
Universal AP (Allopregnanolone) Competitive ELISA Kit (STJE0007194)

Applications :

ELISA

Reactivity :

Universal

MSRP:

Was:

Now: $590.63 - $806.63

Choose Options
Universal AP (Allopregnanolone) Ready-To-Use Competitive ELISA Kit (STJE0013570)

Applications :

ELISA

Reactivity :

Universal

MSRP:

Was:

Now: $616.28 - $841.73

Choose Options
Universal ASD (Androstenedione) Competitive ELISA Kit (STJE0007332)

Applications :

ELISA

Reactivity :

Universal

MSRP:

Was:

Now: $567.68 - $771.53

Choose Options
Universal ASD (Androstenedione) Ready-To-Use Competitive ELISA Kit (STJE0013708)

Applications :

ELISA

Reactivity :

Universal

MSRP:

Was:

Now: $590.63 - $806.63

Choose Options
Universal BH4 (Tetrahydrobiopterin) Competitive ELISA Kit (STJE0019860)

Applications :

ELISA

Reactivity :

Universal

MSRP:

Was:

Now: $220.73 - $482.63

Choose Options
Universal BSA (Bovine Serum Albumin) Competitive ELISA Kit (STJE0007550)

Applications :

ELISA

Reactivity :

Universal

MSRP:

Was:

Now: $635.18 - $870.08

Choose Options
Universal BSA (Bovine Serum Albumin) Ready-To-Use Competitive ELISA Kit (STJE0013926)

Applications :

ELISA

Reactivity :

Universal

MSRP:

Was:

Now: $590.63 - $806.63

Choose Options
Universal cAMP (Cyclic Adenosine Monophosphate) Competitive ELISA Kit (STJE0007661)

Applications :

ELISA

Reactivity :

Universal

MSRP:

Was:

Now: $497.48 - $672.98

Choose Options
Universal cAMP (Cyclic Adenosine Monophosphate) Ready-To-Use Competitive ELISA Kit (STJE0014036)

Applications :

ELISA

Reactivity :

Universal

MSRP:

Was:

Now: $517.73 - $701.33

Choose Options
Universal CAR (Carnosine) Competitive ELISA Kit (STJE0007679)

Applications :

ELISA

Reactivity :

Universal

MSRP:

Was:

Now: $590.63 - $806.63

Choose Options
Universal CAR (Carnosine) Ready-To-Use Competitive ELISA Kit (STJE0014054)

Applications :

ELISA

Reactivity :

Universal

MSRP:

Was:

Now: $616.28 - $841.73

Choose Options
Universal cGMP (Cyclic Guanosine Monophosphate) Competitive ELISA Kit (STJE0007909)

Applications :

ELISA

Reactivity :

Universal

MSRP:

Was:

Now: $567.68 - $771.53

Choose Options
Universal cGMP (Cyclic Guanosine Monophosphate) Ready-To-Use Competitive ELISA Kit (STJE0014284)

Applications :

ELISA

Reactivity :

Universal

MSRP:

Was:

Now: $590.63 - $806.63

Choose Options
Universal CML (Carboxymethyl Lysine) Competitive ELISA Kit (STJE0008001)

Applications :

ELISA

Reactivity :

Universal

MSRP:

Was:

Now: $567.68 - $771.53

Choose Options
Universal CML (Carboxymethyl Lysine) Ready-To-Use Competitive ELISA Kit (STJE0014377)

Applications :

ELISA

Reactivity :

Universal

MSRP:

Was:

Now: $590.63 - $806.63

Choose Options
Universal Cor (Cortisol) Competitive ELISA Kit (STJE0008081)

Applications :

ELISA

Reactivity :

Universal

MSRP:

Was:

Now: $567.68 - $771.53

Choose Options
Universal Cor (Cortisol) Ready-To-Use Competitive ELISA Kit (STJE0014457)

Applications :

ELISA

Reactivity :

Universal

MSRP:

Was:

Now: $590.63 - $806.63

Choose Options
Universal Cor (Cortisone) Competitive ELISA Kit (STJE0008076)

Applications :

ELISA

Reactivity :

Universal

MSRP:

Was:

Now: $567.68 - $771.53

Choose Options
Universal Cor (Cortisone) Ready-To-Use Competitive ELISA Kit (STJE0014452)

Applications :

ELISA

Reactivity :

Universal

MSRP:

Was:

Now: $590.63 - $806.63

Choose Options
Universal Cort (Corticosterone) Competitive ELISA Kit (STJE0008079)

Applications :

ELISA

Reactivity :

Universal

MSRP:

Was:

Now: $567.68 - $771.53

Choose Options
Universal Cort (Corticosterone) Ready-To-Use Competitive ELISA Kit (STJE0014455)

Applications :

ELISA

Reactivity :

Universal

MSRP:

Was:

Now: $590.63 - $806.63

Choose Options
Universal Creatinine (Creatinine) Competitive ELISA Kit (STJE0008174)

Applications :

ELISA

Reactivity :

Universal

MSRP:

Was:

Now: $567.68 - $771.53

Choose Options
Universal Creatinine (Creatinine) Ready-To-Use Competitive ELISA Kit (STJE0014550)

Applications :

ELISA

Reactivity :

Universal

MSRP:

Was:

Now: $590.63 - $806.63

Choose Options
Universal DA (Dopamine) Competitive ELISA Kit (STJE0008340)

Applications :

ELISA

Reactivity :

Universal

MSRP:

Was:

Now: $567.68 - $771.53

Choose Options
Universal DA (Dopamine) Ready-To-Use Competitive ELISA Kit (STJE0014717)

Applications :

ELISA

Reactivity :

Universal

MSRP:

Was:

Now: $590.63 - $806.63

Choose Options
Universal DDAVP (1-Desamino 8D Arginine Vasopressin) Competitive ELISA Kit (STJE0008383)

Applications :

ELISA

Reactivity :

Universal

MSRP:

Was:

Now: $590.63 - $806.63

Choose Options
Universal DDAVP (1-Desamino 8D Arginine Vasopressin) Ready-To-Use Competitive ELISA Kit (STJE0014760)

Applications :

ELISA

Reactivity :

Universal

MSRP:

Was:

Now: $616.28 - $841.73

Choose Options
Universal DHVD3 (1, 25-Dihydroxyvitamin D3) Competitive ELISA Kit (STJE0008430)

Applications :

ELISA

Reactivity :

Universal

MSRP:

Was:

Now: $567.68 - $771.53

Choose Options
Universal DHVD3 (1, 25-Dihydroxyvitamin D3) Ready-To-Use Competitive ELISA Kit (STJE0014807)

Applications :

ELISA

Reactivity :

Universal

MSRP:

Was:

Now: $590.63 - $806.63

Choose Options
Universal E1 (Estrone) Competitive ELISA Kit (STJE0008543)

Applications :

ELISA

Reactivity :

Universal

MSRP:

Was:

Now: $590.63 - $806.63

Choose Options
Universal E1 (Estrone) Ready-To-Use Competitive ELISA Kit (STJE0014921)

Applications :

ELISA

Reactivity :

Universal

MSRP:

Was:

Now: $616.28 - $841.73

Choose Options
Universal E1S (Estrone Sulfate) Competitive ELISA Kit (STJE0008544)

Applications :

ELISA

Reactivity :

Universal

MSRP:

Was:

Now: $567.68 - $771.53

Choose Options
Universal E1S (Estrone Sulfate) Ready-To-Use Competitive ELISA Kit (STJE0014922)

Applications :

ELISA

Reactivity :

Universal

MSRP:

Was:

Now: $590.63 - $806.63

Choose Options

528 of 630 Items

6
7
8
9
10
11
12
13
14

!

Footer Start

Information

about us
distributors
privacy policy
terms & conditions
blog

Customer service

contact us
shipping
FAQ
antibody troubleshooting

My Account

my account
order history

Company

St John's Laboratory Ltd
Knowledge Dock Business Centre
University Way
London
E16 2RD, UK

Subscribe

newsletter.subscribe_intro

Email Address

Receive discounts, product insights and technical resources as a subscriber.

© 2025 Product Ecommerce St John's Laboratory Ltd All Rights Reserved.

Terms
Privacy
Cookies