Research peptides are short-chain amino acid sequences synthesised for use in scientific investigation, typically in vitro (cell culture) and preclinical (animal model) research contexts. Unlike therapeutic drugs, research peptides are not approved medicines; they are tools for investigating biological mechanisms at the molecular and cellular level.
Peptides are distinguished from proteins by length: conventionally, chains of fewer than 50 amino acids are classified as peptides. Their small size generally confers high receptor specificity and relatively low immunogenicity compared to larger biologics, making them valuable research tools for characterising specific signalling pathways.
In Australia, research peptides are supplied for laboratory use only and are not listed on the Australian Register of Therapeutic Goods (ARTG) as approved medicines. See: Are Research Peptides Legal in Australia?