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The RayBio® Immuno-Quantitative ELISA (IQELISA) kit is an innovative assay platform that combines the specificity and ease of use of a sandwich ELISA test with the sensitivity of real-time PCR. Duplication via PCR enhances sensitivity up to 10 times in comparison to a traditional ELISA test. Furthermore only 1/10th of the typical sample volume is required for successful measurements. The IQELISA technology is completely novel, patent pending, and has no equivalent in the market at this time. Discover more than 2200 IQELISA™ Kits from RayBio and find a kit against your target!

We offer a wide range of high-quality ELISA kits for various targets and sample types - The marketplace for antibodies, ELISA kits, and other research reagents offers 1.248.931 research reagents from 250 renowned suppliers that cover a wide range of research applications. You will find a large selection of 870.052 antibodies, ELISA kits (170.000), 109.748 kits, 4.793 secondaries, 175.870 proteins, peptides and isotype controls. Visit our Offers & Promotions page periodically.

Independent Validation Initiative

As the largest marketplace for research antibody reagents with more than 1.6 million products and customers in over 50 countries, we have introduced the Independent Validation Initiative.

We are committed to improving the proteomics market by providing independently collected, scientifically sound, and properly documented data for the products that we sell, which is why we set very high standards for independent validation data. It is easy to participate and you will get a full refund for the validated products.

The Validation Process

Apply to participate in the independent validation initiative by proposing a validation experiment. After approval, perform the validation experiment, and send us your validation data. We provide a complete refund for the product you validated - pass or fail.

Important product categories

Monoclonal & polyclonal Antibodies:
Monoclonals are antibodies that are made by identical immune cells that are all clones of a unique parent cell and bind to the same epitope. We offer you more than 300,000 high-quality monoclonal antibodies validated for a wide variety of applications, reactivities, conjugated and unconjugated monoclonals.
Antibodies category.

If you need to perform an ELISA, an ELISA kit is a good option because: The kit contains all of the necessary reagents in one box – no need to buy anything extra. Individual components are already tested, and have been proven effective and compatible with each-other. On you will find a plethory of high quality suppliers offering a wide range of validated ELISA kits. We are confident in the performance of our ELISA kits, stand behind them to the fullest and offer a money-back guarantee for each kit.
ELISA kits category.

Secondary Antibodies:
antibodies-online offers you more than 22,000 secondary antibodies validated for the most varied applications, such as ELISA, flow cytometry, western blot, ICC, IHC and many more. Our product portfolio covers all common host organisms and reactivity types. In addition you will find at some more rarely used hosts, such as apes, dogs, Syrian hamsters.
Category secondary antibodies.

Made-to-order Proteins:
Our "Crystallization Grade" proteins are made to order proteins and will be designed and produced in Germany the first time you order. They are produced using a best-in-class purification protocol including the proprietary rho1D4 tag & stringent quality control process via SDS-PAGE, Western blot, and size exclusion chromatography.
Category made-to-order proteins.

Find the right antibody, kit, protein at

A search function with extensive filter options allows you to quickly identify the most suitable product amongst the large product range on You may for instance start by entering the antigen name of the target you are interested in. The search results can be refined by setting filters for product type, reactivity, host and others. For example, if you are looking for an ELISA kit for the measurement of Interleukin 6 in rat material, you can enter the antigen name, set a filter for the reactivity “rat” and select the product type “kit” as well as the application “ELISA”. For information about our independent validation initiative please visit our IV page.

If your search does not yield the desired result or if you have additional questions regarding the product you are welcome to contact our customer service by phone or mail. It will be our pleasure to assist you.

Our ordering process is designed to be time efficient and simple. You may order immediately online via our webshop, by email, and by phone or fax. We do accept purchase order numbers (PON). You may pay via credit card, wire transfer or check. Regardless of the selected method of ordering we make sure it will be simple, safe and swift.

If a product does not work as indicated in the datasheet we will refund the purchase price. As an alternative we will provide you with a replacement.

We support you in searching, ordering and using antibodies, ELISA kits and related research reagents. is the right place to find and procure the products for your research. You may also find us in german at, french at and in chinese at