Tirzepatide
Research & Laboratory Information
A straightforward guide to tirzepatide, its GIP and GLP-1 receptor activity, published research, molecular structure, analytical testing and research-use material.
Tirzepatide 10 mg
Research-use tirzepatide material supplied as a 10 mg lyophilised vial.
View Product →What is tirzepatide?
Tirzepatide is a modified peptide that activates both the GIP and GLP-1 receptors. This makes it different from selective GLP-1 receptor agonists such as semaglutide.
Tirzepatide as a peptide
A peptide is a chain of amino acids. Amino acids are the building blocks that make up proteins and many biologically active molecules.
Tirzepatide is a synthetic peptide based on the sequence of glucose-dependent insulinotropic polypeptide, commonly called GIP, with structural modifications that affect its biological properties.
The molecule also has activity at the GLP-1 receptor, giving it a dual GIP and GLP-1 receptor profile.
A dual receptor agonist
Tirzepatide is described as a GIP and GLP-1 receptor agonist. An agonist is a substance that activates a receptor and produces a biological response.
GIP and GLP-1 are both signalling hormones involved in biological processes including glucose regulation.
GIP + GLP-1 explained
Understanding the two receptor targets helps explain why tirzepatide is studied differently from compounds that primarily target GLP-1.
GIP receptor
GIP stands for glucose-dependent insulinotropic polypeptide. The GIP receptor is a protein that responds to this signalling molecule.
GLP-1 receptor
The GLP-1 receptor responds to GLP-1 signalling and is involved in several processes related to glucose regulation and metabolism.
Dual activity
Tirzepatide activates both receptors. This dual activity is one of the main features researchers investigate when studying the compound.
Tirzepatide 10 mg for research use
TrimFast supplies tirzepatide research material in a 10 mg lyophilised vial. This page explains the compound, its research background and analytical information, while the product page provides the specific product details.
Clearly identified research material.
Product and batch information can be reviewed separately.
Intended for laboratory and analytical research only.
Tirzepatide research
Tirzepatide has been investigated in clinical and laboratory research, including studies of glucose regulation, body weight and metabolic outcomes.
Glucose regulation
Research has examined tirzepatide in relation to glucose-related measures, including blood glucose and glycated haemoglobin.
Body-weight research
Clinical research has investigated tirzepatide in adults with overweight or obesity and measured changes in body weight and related outcomes.
GIP and GLP-1 signalling
The dual receptor activity of tirzepatide is an important part of research into how GIP and GLP-1 signalling interact.
Metabolic research
Studies have examined a range of metabolic markers and outcomes in different research populations.
Longer-term research
Some studies have followed participants for extended periods to examine outcomes over time.
Analytical research
Laboratory research can also examine peptide identity, purity, concentration, stability and analytical characteristics.
Tirzepatide in laboratory research
Research involving tirzepatide can involve both biological questions and analytical questions about the material being studied.
Identity
Identity testing asks whether the material has characteristics consistent with the intended compound.
Purity
Purity describes the proportion of analysed material associated with the intended compound rather than other detected components.
Concentration
Concentration describes the amount of material present in a defined volume of solution.
Tirzepatide molecular weight and structure
The molecular information below provides a useful starting point for researchers working with tirzepatide as a peptide material.
Tirzepatide
A modified peptide with activity at both the GIP and GLP-1 receptors.
Tirzepatide molecular formula
The molecular formula describes the number of atoms of each element in a molecule. PubChem reports the formula for tirzepatide as C225H348N48O68.
Its commonly reported molecular weight is approximately 4,813 g/mol.
Tirzepatide purity, HPLC and identity testing
Different analytical tests answer different questions. This is important when reviewing a tirzepatide COA or laboratory report.
Tirzepatide HPLC testing
HPLC means high-performance liquid chromatography. It separates components in a sample so they can be measured or examined.
HPLC can be used as part of analytical work examining chromatographic purity and related components.
Identity testing
Identity testing asks whether the material has characteristics consistent with the intended compound.
Mass spectrometry, often called MS, can provide information about molecular mass and identity.
Tirzepatide COA
A Certificate of Analysis, or COA, reports analytical results for a particular batch or sample.
A COA is useful evidence, but it should be interpreted alongside the methods and information reported on the document.
What to look for on a tirzepatide COA
Clearly identify the material tested.
Link the analysis to a specific batch.
Check which testing method was used.
Understand exactly what the reported value means.
Check when the analysis was performed.
Check who performed or issued the analysis.
Tirzepatide vs Semaglutide vs Retatrutide
These compounds share some research themes but differ in their receptor activity and research status.
| Compound | Receptor activity | Research status | TrimFast material |
|---|---|---|---|
| Semaglutide | GLP-1 receptor | Extensively studied | 5 mg vial → |
| Tirzepatide | GIP + GLP-1 receptors | Extensively studied | 10 mg vial → |
| Retatrutide | GIP + GLP-1 + glucagon receptors | Investigational | 10 mg vial → |
Published tirzepatide research
The studies below provide examples of clinical research involving tirzepatide. They are presented as research references rather than treatment guidance.
SURMOUNT-1
A large randomised, double-blind, placebo-controlled study examining tirzepatide in adults with obesity or overweight.
View PubMed study →SURPASS-2
A comparative study examining tirzepatide against semaglutide in adults with type 2 diabetes.
View PubMed study →Further tirzepatide studies
The wider SURPASS and SURMOUNT programmes have investigated tirzepatide across different populations and research questions.
Search PubMed →Want to explore the research in more detail?
This page provides a straightforward introduction to tirzepatide. The TrimFast Members Area contains deeper educational resources covering published studies, research terminology, analytical testing, COAs, preparation records and research data.
Explore Members Area →Tirzepatide research questions
Straightforward answers to common questions about tirzepatide, its structure and laboratory research.
What is tirzepatide?
Tirzepatide is a modified peptide that activates both the GIP and GLP-1 receptors. It has been extensively studied in clinical research.
What is tirzepatide used to research?
Research involving tirzepatide has examined glucose regulation, body-weight outcomes, metabolic measures and GIP and GLP-1 receptor signalling.
What is the molecular weight of tirzepatide?
The commonly reported molecular weight of tirzepatide is approximately 4,813 g/mol.
What is the molecular formula of tirzepatide?
The molecular formula reported by PubChem is C225H348N48O68.
What is a tirzepatide COA?
A Certificate of Analysis, or COA, reports analytical results for a particular batch or sample. Depending on the laboratory, it may include identity, purity, assay and other analytical results.
How is tirzepatide purity tested?
Chromatographic methods such as HPLC can be used to examine the composition of a sample and assess chromatographic purity. Other analytical methods can provide different information, including molecular identity.
What is the difference between tirzepatide and semaglutide?
Tirzepatide activates both GIP and GLP-1 receptors, while semaglutide primarily activates the GLP-1 receptor.
What is the difference between tirzepatide and retatrutide?
Tirzepatide activates GIP and GLP-1 receptors. Retatrutide is an investigational triple receptor agonist targeting GIP, GLP-1 and glucagon receptors.
Looking for Tirzepatide 10 mg?
Explore the TrimFast Tirzepatide 10 mg product page for product, batch and research-use information.
View Tirzepatide 10 mg →