Custom Polyclonal Antibodies for Research and Diagnostics.

Polyclonal antibodies (pAbs) are a heterogeneous mix of immunoglobulin molecules produced by different B cell clones in response to an antigen. Unlike monoclonal antibodies, which recognise a single epitope, polyclonal antibodies bind to multiple epitopes on the same antigen. This makes them particularly valuable in applications where sensitivity, signal amplification, or recognition of conformational variants is essential.

Polyclonal antibodies are commonly used in:

• ELISA (enzyme-linked immunosorbent assay)
• Western blotting
• Immunohistochemistry (IHC)
• Flow cytometry
• Immunoprecipitation
• Diagnostic test development

As a trusted polyclonal antibody producer, we provide end-to-end support – from antigen design to final purification – to ensure high-quality results. Our flexible service models allow you to choose the host species, immunisation strategy, and purification method to meet your research goals.

• Species Options: Rabbit, goat, sheep, and more
• Custom Immunisation Protocols: Peptide- or protein-based
• Affinity Purification Available: Ensures high specificity and reduced background
• Scalable Production: From milligram to gram quantities
• Expert Project Consultation: Guidance on antigen selection and assay compatibility

All antibodies are produced under stringent quality control standards, and each batch is fully documented with a certificate of analysis.

Polyclonal antibodies offer several advantages depending on the application:

• Broad Epitope Recognition: Increases the chance of detecting target proteins even if some epitopes are masked or denatured
• Higher Signal Intensity: Ideal for detection-based assays such as Western blot and IHC
• Rapid Production Timelines: Faster than monoclonal development, especially for urgent research deadlines
• Cost-Effective: Suitable for labs needing reliable results without the complexity or cost of monoclonal antibodies

Whether you’re working in proteomics, cell biology, or diagnostic kit development, our polyclonal antibodies provide the flexibility and performance you need.

At White Antibodies, we understand that each project is unique. That’s why we offer full customisation at every stage of the production pipeline:

We help design immunogenic peptides or source recombinant proteins, ensuring your target is accurately represented.

Choose from rabbit, goat, or sheep — each species offers unique immunological benefits depending on your target and application.

We offer both protein A/G purification and antigen-specific affinity purification, along with optional validation services such as ELISA testing, Western blot analysis, and titre measurement.

Our custom-produced polyclonal antibodies are used by researchers, diagnostic developers, and biotech companies around the world in fields such as:

• Infectious disease research
• Cancer biomarker detection
• Neurobiology
• Veterinary diagnostics
• Environmental testing

If you’re developing a diagnostic kit or investigating protein expression in tissue samples, we can help produce antibodies tailored to your exact requirements.