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Enzyme-linked immunosorbent assay (ELISA) is one of the most specific and straightforward assays for detecting biomolecules. With our mature protein expression platform, antibody production platform and strong background in immunology, Alpha Lifetech Inc. has been proudly serving the life science markets for many years, committed to providing customers with quality products and professional service. Our products and services are tested and trusted.

Alpha Lifetech Inc. offers an extensive list of over 10,000 high-quality ELISA Kits including Human ELISA Kits, Animal ELISA Kits, COVID-19 ELISA Kits and Other ELISA kits for the detection of different proteins and molecules. The Human ELISA Kits we produce cover popular research areas including immunology, cancer, metabolism, cardiovascular, cell biology, microbiology, neurobiology, cell signaling and more. Our Animal ELISA Kits cover various species from regular species like rat, mouse, to rare species like monkey, bovine, chicken, etc.

The ELISA kits can be used with a wide variety of sample types (e.g., serum, plasma, tissue homogenates, cell culture lysates, and cell culture supernatants). And we provide different ELISA types to meet researchers' needs. The advantages and disadvantages of different types of ELISA are listed below to help you choose the appropriate ELISA kit.


Table 1 Advantages and disadvantages of different types of ELISA




Direct ELISA


■ Rapid

■ Secondary antibody cross-reactivity eliminated

■ Low sensitivity

■ Specific antibody for each ELISA

Time-consuming and expensive

Indirect ELISA


■ High sensitivity

■ Cost-saving

■ Flexible; can use many primary antibodies

■ Risk of cross-reactivity between secondary antibodies

Sandwich ELISA


■ Minimal sample purification needed

■ High sensitivity and specificity

■ Must use "matched pair" primary and secondary antibodies

■ Time consuming and expensive

Competitive ELISA


■ Minimal sample purification needed

■ Used to measure a wide of antigens in a sample

■ Used for small antigens

■ Low variability

■ Low specificity so cannot be used in dilute samples


As a professional ELISA kits manufacturer and supplier, the core components of ELISA kits-protein and antibody, are produced based on our mature protein expression platform and antibody production platform, so we can control the quality of kits at the source. We make sure that each kit from Alpha Lifetech Inc. is rigorously tested to ensure precision, accuracy, sensitivity, specificity, and reproducibility. All the components you need in an ELISA are provided including coating buffers, blockers, sample and assay diluents, conjugate stabilizers, and wash buffer all work together to generate a clean signal.

Alpha Lifetech Inc. is becoming a choice for sourcing ELISA kits for customers throughout the world. Our sales representatives and technical experts will continue in providing advice throughout. In addition, we can offer customized services for your special requirements, providing protein expression, antibody production, ELISA construction, conduction of assays, result analysis and other one-stop technical services.

Please check our list to choose the ELISA kit you want and feel free to contact us for more information. 


Human ELISA Kits

Animal ELISA Kits