All peptides used for antibody production are synthesized by our expert service providers. The peptide purity may vary depending on the size and complexity of the peptides. We offer competitive and fixed prices with no set up fee on peptide synthesis. Generally our peptides are greater than 80% pure and at a scale higher than 20 mg for antibody production purposes. The quality is determined by HPLC purification, gradient elution, massspectrometry analysis and UV scans. Post synthesis peptide modifications such as phosphorylation, cyclization, terminal amidation, farnesylation, sulfation etc. are extra. Peptides with higher purity (<98%) and larger scale can be synthesized at an extra cost