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Antibody Purification Services

Custom antibody purification services for serum, ascites, cell culture supernatants, bioreactor harvests, and egg yolk samples using Protein A, Protein G, Protein L, peptide-specific affinity, ion exchange, and low endotoxin purification workflows. Designed to balance yield, purity, and application fit for research, assay development, and downstream bioconjugation or characterization.

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Overview Capabilities Purification Methods Sample Types Method Comparison Deliverables Applications FAQ Contact

Overview

Antibody purification is a critical step for isolating immunoglobulins from complex biological matrices while preserving activity and reducing contaminants that can interfere with downstream performance. The right purification strategy depends on antibody class or subclass, host species, sample type, purity target, and final application.

Bio-Synthesis provides custom purification support for bioreactor harvests, cell culture supernatants, sera, ascites, and egg yolk-derived IgY, from small-volume projects to larger-scale workflows. We offer both broad capture methods and highly selective affinity approaches depending on whether you need total Ig enrichment, antigen-specific purification, polishing, or reduced endotoxin handling.

Protein A/G/L purification Peptide-specific affinity IgY purification Low endotoxin options SDS-PAGE QC Serum, ascites, supernatants Small to liter scale

Included quality control: All antibody purification services include a confirmation check by SDS-PAGE. Depending on the workflow, additional evaluation such as yield, purity, and immunoreactivity reporting can also be incorporated.

Antibody purification services including Protein A/G/L purification, peptide affinity purification, IgY purification, and low endotoxin workflows
Built around your antibody: We help select the purification method based on species, isotype, source material, and intended use so the final workflow is aligned to the best balance of yield, purity, and cost.

Input types

Serum to bioreactor

Sera, ascites, egg yolk, cell culture supernatant, and bioreactor material

Capture modes

A, G, L & antigen

Protein A, Protein G, Protein L, and peptide or antigen-specific affinity

Scale

mL to liters

Small-volume analytical and larger-volume production support

QC

SDS-PAGE included

Confirmation check included with every antibody purification project

Core Capabilities

Protein A / G / A/G Purification

Standard affinity capture of IgG antibodies from serum, ascites, and culture-derived materials with method selection based on species and subclass compatibility.

Protein L Purification

Useful for antibodies that do not fit typical Protein A or G binding profiles, including certain light chain-dependent workflows.

Peptide-Specific Affinity Purification

High-specificity purification for polyclonal antibodies using immobilized peptide antigen to isolate target-reactive antibody populations.

IgY and Chicken Antibody Purification

Support for egg yolk-derived IgY and antigen-specific chicken antibody purification where Protein A and G are not appropriate.

Ion Exchange Purification

Charge-based purification or polishing to improve purity, support concentration strategies, or complement precipitation workflows for larger volumes.

Low Endotoxin Antibody Purification

Reduced endotoxin workflows for projects where downstream cell-based work, conjugation, or sensitive applications require cleaner preparations.

Purification Methods

Affinity-Based Purification

  • Protein A affinity chromatography
  • Protein G affinity chromatography
  • Protein A/G affinity chromatography
  • Protein L affinity purification
  • Ig antibody affinity purification
  • Peptide or protein immunoaffinity purification

Non-Affinity & Polishing Methods

  • Ion exchange chromatography
  • Hydrophobic interaction chromatography
  • Size exclusion chromatography
  • PEG and/or ammonium sulfate precipitation
  • HPLC-based purification where appropriate
  • Combined workflows for concentration and cleanup
Method selection matters: Protein A and Protein G have different binding efficiencies across species and subclasses, while chicken IgY does not bind Protein A or Protein G. Peptide immunoaffinity purification is often preferred when you need highly specific antibodies rather than total Ig enrichment.

Supported Sample Types

Serum

Common input for polyclonal antibody purification and total Ig capture workflows.

Ascites

High-concentration monoclonal antibody source suitable for affinity and polishing workflows.

Cell Culture Supernatant

Used for monoclonal antibody purification from hybridoma or recombinant production systems.

Bioreactor Harvest

Larger-scale purification support for process development and production-oriented programs.

Egg Yolk

IgY purification and antigen-specific chicken antibody workflows from yolk-derived material.

Antisera

Capture of total immunoglobulin or selective enrichment using antigen-driven affinity methods.

Low-Concentration Samples

Method planning to maximize recovery where starting concentration or available volume is limited.

Custom Sources

Flexible review for uncommon matrices, special purification requests, and larger quantities.

Method Comparison

Different antibody purification methods solve different problems. The best choice depends on whether your priority is broad IgG capture, antigen specificity, improved purity, reduced endotoxin, or compatibility with unusual antibody formats.

Method Best For Strengths Considerations
Protein A / G Routine IgG purification High-capacity affinity capture, scalable, widely used Species and subclass binding differences must be checked
Protein L Certain light chain-binding antibodies Useful when Protein A or G is not optimal Not appropriate for every antibody format
Peptide-Specific Affinity Antigen-specific polyclonal antibodies Highest specificity and lower non-specific Ig carryover Elution conditions can affect antibody recovery or conformation
Ion Exchange Polishing and charge-based cleanup Useful for impurity removal and large-volume workflows Typically selected as a complementary rather than primary specificity step
Precipitation Concentration and partial purification Cost-effective for bulk handling and preparative workflows Usually needs follow-up purification for higher purity
Low Endotoxin Workflows Cell-sensitive downstream applications Cleaner material for more demanding uses Should be selected early based on final application requirements
Practical guidance: Peptide immunoaffinity purification is commonly chosen when assay specificity matters most, while Protein A/G remains the workhorse for routine IgG capture from compatible species and subclasses.

Typical Deliverables

Deliverable Type Description Typical Use
Purified Antibody Affinity- or chromatography-purified antibody preparation from your source material Immunoassays, bioconjugation, characterization, and general research
SDS-PAGE Confirmation Included confirmation check with every purification project Basic purity review and batch confirmation
Project Documentation Workflow and QC details may include yield, purity, and immunoreactivity depending on service scope Project records, comparison studies, and downstream planning
Application-Fit Material Optional low endotoxin or selectively purified antibody preparations Cell-based workflows, specific assay formats, and sensitive downstream work

Final deliverables depend on antibody source, selected purification method, requested QC, and downstream application requirements.

Applications

ELISA, Western Blot & Immunoassays

Improved specificity and reduced background through cleaner antibody preparations or antigen-specific enrichment.

Antibody Labeling & Conjugation

Purified antibodies prepared for fluorescent labeling, enzyme labeling, oligo conjugation, or immobilization workflows.

Antibody Characterization

Better material quality for comparative evaluation, binding studies, and downstream analytical workflows.

Secondary Antibody Production

Ig affinity purification can help isolate monoclonal antibodies from supernatants containing high serum Ig.

Large-Volume Preparations

Purification strategies designed for recovery, cost balance, and scalability from small volumes to liters.

Cell-Sensitive Research

Low endotoxin purification options for applications requiring cleaner antibody preparations.

FAQ

What sample types can you purify antibodies from?
We support serum, ascites, cell culture supernatants, bioreactor-derived material, antisera, and egg yolk for IgY purification workflows.
How do I choose between Protein A, G, and L?
The right choice depends on the antibody species, subclass, and binding profile. Protein A and G do not bind all antibodies equally, and chicken IgY does not bind Protein A or G.
When should I choose peptide-specific affinity purification?
This is usually the preferred choice when you need highly specific antibodies against a target peptide or antigen rather than enrichment of the full Ig fraction.
Do all purification services include QC?
Yes. All antibody purification projects include a confirmation check by SDS-PAGE. Additional QC or reporting may be added depending on project scope.
Do you offer low endotoxin purification?
Yes. Low endotoxin Protein A/G, Protein L, and ion exchange purification options are available for projects that need reduced endotoxin handling.
Can you work with large volumes?
Yes. We support small-volume projects as well as larger workflows, including purification from liters of culture supernatant and large custom requests.
More FAQ'sAll FAQ's

Contact & Quote Request

For the fastest quote, include antibody species and isotype if known, source material, available volume, target purification method if preferred, endotoxin requirements, and the intended downstream application.

What to include

  • Antibody species, class, or subclass if known
  • Source material and starting volume
  • Need for antigen-specific or low endotoxin purification
  • Downstream assay, conjugation, or analytical requirements

Fastest path

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Why Choose Bio-Synthesis

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