Essential peptide science terminology, clearly defined.

A chemical compound that binds to a biological receptor and activates it, triggering an intracellular physiological response.

The organic molecular building blocks of peptides and proteins, consisting of a central alpha carbon, amino group, carboxyl group, and unique side chain.

A ligand that binds to a receptor without activating it, blocking endogenous agonists from initiating a biological response.

The fraction of an administered dose of unchanged drug that reaches systemic blood circulation.

A formal document issued by an analytical laboratory certifying that a batch of a product meets specified chemical testing criteria.

A prospective biomedical or behavioral research study evaluating the safety and efficacy of medical interventions in human participants.

The creation of a customized pharmaceutical medication by a licensed pharmacist to meet the specific medical needs of an individual patient.

Official determination by the U.S. Food and Drug Administration that a drug has proven safety and clinical efficacy for a specific medical condition.

The time required for the concentration of a drug in the body or plasma to be reduced by fifty percent.

High-Performance Liquid Chromatography: a separation technique used in analytical chemistry to quantify peptide purity.

The ability of a biological substance or drug to provoke an immune response and stimulate antibody formation in the human body.

Scientific studies conducted outside a living organism, typically in test tubes, culture dishes, or cell-free assays.

Scientific research or biological processes taking place inside a living, intact whole organism.

A pharmaceutical compound that has received regulatory authorization (IND) for clinical testing in humans but has not yet received marketing approval.

An analytical technique that measures the mass-to-charge ratio of ions to confirm the exact molecular identity of a peptide.

The specific biochemical interaction through which a drug substance produces its pharmacological effect.

A statistical procedure combining data from multiple independent studies to derive a pooled quantitative estimate of treatment effect.

A biological molecule composed of short chains of amino acid monomers linked together by peptide bonds.

The covalent chemical amide linkage formed between the carboxyl group of one amino acid and the amino group of another.

Unintended chemical byproducts formed during peptide chemical synthesis, purification, or storage.

The study of the biochemical and physiological effects of drugs on the body and their mechanisms of action.

The study of how the body absorbs, distributes, metabolizes, and excretes an administered drug over time.

Research conducted in laboratory assays and animal models prior to initiating clinical trials in human participants.

An experimental study design where participants are randomly allocated to receive either the intervention or a control treatment.

A cellular protein molecule that receives biochemical signals by binding to specific external ligands.

A literature review using structured, reproducible methodologies to synthesize all available empirical evidence on a clinical question.

The World Anti-Doping Agency: the international independent organization governing anti-doping policies in sports.