ELK Biotechnology - ELISA Kits, Antibodies, Genome Extraction and Molecular Biology Reagents - Distributed in the UK by Caltag

ELK Biotechnology

ELK Biotechnology is a high-tech biological company focusing on the development and production of immunological and molecular biology products. Every ELK product is supported by complete R&D, production and quality inspection records, ensuring researchers receive reliable, high-quality products for their scientific research.

As the company continues to develop, ELK Biotechnology remains committed to implementing environmentally sustainable practices into its production processes. This commitment reflects ELK's mission to provide scientists with cutting-edge, cost-effective research tools that contribute to the development of human life sciences, while protecting the environment.

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Read More About the Products Available:

  • Antibodies
  • ELISA Kits
  • Molecular Products
  • Biochemical Assay
  • Proteins
  • All

Antibodies

ELK Biotechnology provides 14,000+ high-quality antibodies validated by WB, IHC, IF, etc., covering human genomic targets. These antibodies cover the major areas of basic metabolic and translational research in the life sciences, including epigenetics and transcriptional regulation, metabolism and endocrinology, signal transduction, cell biology, cardiovascular, neuroscience, stem cells and development, tumour suppression and apoptosis, inflammation and immunity, and post-translational modification of proteins.

Key Features of ELK Biotechnology Antibodies

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ELISA Kits

ELK Biotechnology has focused on the R&D and production of antibodies and proteins for more than 14 years. Relying on this existing technology platform, ELK Biotechnology provides 8000+ ELISA kits covering more than 20 species for immunochemistry, oncology, neurobiology, cell cycle, signalling and other research. Their products have obtained IS09001 and CE certificates, and are trusted by researchers around the world, with 4000+ citations to date.

The production of the kits follows a strict three-step QC process of raw materials, semi-finished products and finished products, resulting in high sensitivity, specificity and superior product performance.

In 2026, ELK Biotechnology was awarded the prestigious title of "ELISA Kit Supplier to Watch 2026" in the annual awards by CiteAb. This recognition was based on their substantial and consistent data in scientific literature, along with outstanding user feedback.

CiteAb 2026 Award

Advantages of ELK's ELISA Kits

  • Full range of indicators – choose from thousands of ELISAs
  • Good integrity – complete reagent set, ready-to-use
  • High sensitivity – pg-grade
  • High precision – both intra-CV and inter-CV are <10%
  • Excellent recovery rate – 85%-115%
  • High specificity – cross-reaction rate <5%
ELK Traditional ELISA Kits
ELK EasyStep ELISA Kits
ELK High-Sensitivity ELISA Kits
ELK Microsample ELISA Kits

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EasyStep ELISA Kits

EasyStep ELISA Kits are a new technology developed by ELK Biotechnology. Based on a three-step method, it achieves one-step sample loading by directly labelling the detection antibody with HRP. This method not only saves time, but also improves experimental efficiency.

EasyStep vs Traditional

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High-Sensitivity ELISA Kits

ELK Biotechnology's High-Sensitivity ELISA Kits are focused on cytokines, providing optimal solutions for low-concentration detection in cell supernatants.

  • Ultra-low detection – measures trace amounts with sensitivity down to pg/mL (some kits to fg/mL0, offering 2-10x higher sensitivity than traditional ELISAs
  • High specificity – employs a sandwich format with high affinity antibodies, minimising false positives and ensuring reliable performance in complex samples like serum and plasma
  • Strong signal amplification – uses HRP enzyme with biotin-avidin amplification and optimised substrates for high signal-to-noise ratio and low background
  • Excellent reproducibility – features intra/inter-assay CV <8%, recovery rates of 80-120% and consistent lot-to-lot performance
  • Easy and high-throughput – ready-to-use, pre-coated 96-well plates are automation-friendly

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Microsample ELISA Kits

Microsample ELISA Kits only require 25 µL of sample, compared to the normal 100 µL, allowing samples with small collection volumes to be utilised! These kits maintain high sensitivity (mg/mL level) and high specificity, with cross-reactivity <5%, so you can eliminate high background interference. They also achieve outstanding precision, with intra- and inter-assay CVs <8.5%, delivering reliable and consistent results with excellent reproducibility.

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Molecular Products

ELK Biotechnology offer more than 20 types of DNA extraction and RNA extraction kits, with optimised centrifugal column design and buffer formulation to obtain better yield and purity of products, which can be used in various types of downstream experiments.

ELK also provides 30+ qPCR/RT-PCR reagents, which have all been tested for validity and stability, with high sensitivity and specificity, easy and fast operation, low purity requirement for samples, and personalised reagent proportioning to meet the needs of different instruments and models, with a wide range of applications.

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Biochemical Assays

ELK Biotechnology provides over 100 biochemical kits covering metabolite assays and metabolic enzyme assays related to lipid metabolism, glucose metabolism, liver and kidney function, oxidative stress, tricarboxylic acid cycle, inorganic salt ions, and more. These kits meet the needs of various types of samples, including serum, plasma, tissue grinding fluid and cell culture fluid, with convenient operation and easy calculation of results.

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Proteins

Recombinant proteins are a class of proteins with certain functions and activities developed by applying technologies such as genetic engineering and cellular engineering, which can be used in many fields such as protein structure research, cellular function tests, immunoassay reagents, recombinant protein drugs, diagnostic reagent development, crystal structure analysis, pharmacokinetic analysis, and many other fields.

ELK Biotechnology provides 350+ cytokines, all of which are injected into cell culture animals for scientific research, with high bioactivity, high purity, low endotoxin, and label-free characteristics to ensure reliable experimental results. Some specific proteins are stored in lyophilised powder form for improved stability and shelf life.

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Publications

ELK Biotechnology's products have been cited in over 3000 publications; click here to explore them.

Blog posts

We’re proud the highlight our supplier, ELK Biotechnology, who has won the CiteAb 2026 ELISA Kit Supplier to Watch Award!

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Caltag Medsystems are the UK and European distributor of ELK Biotechnology: experts on immunology-related products, priding themselves on offering hig…

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