GLP-2 TZ 10mg (Tirzepatide)

Each GLP-2 TZ vial from Onyx Research holds 10mg of tirzepatide, freeze-dried and crimp-sealed. It’s a dual GIP and GLP-1 receptor agonist. It’s meant for lab and analytical work only.

GLP-2 TZ is the name on our label. The 2 counts the receptors it acts on, GIP and GLP-1, and TZ stands for tirzepatide, the peptide in the vial.

GLP-2 TZ certificate of analysis

Onyx Research sends GLP-2 TZ to Freedom Diagnostics, a testing lab in the United States, which runs HPLC with UV detection coupled with mass spectrometry. HPLC measures purity and mass spec confirms the molecule’s identity. The report is in the product photos above.

• GLP-2TZ 10mg: 99.768% purity, reported 1/26/2026, search code Onyx2601230040

Our labels promise 99% purity, and the reports above come in at up to 99.768%. Enter the search code on the Freedom Diagnostics site to pull up the same report yourself.

GLP-2 TZ (tirzepatide) background

Tirzepatide is a 39-amino-acid peptide from Eli Lilly that activates two receptors, GIP and GLP-1. A fatty acid side chain lets it bind albumin, so its half-life is about five days. It’s an approved medicine for type 2 diabetes and for weight management.

Mechanism of action

Tirzepatide activates two incretin receptors. GIP and GLP-1 are both released by the gut after eating, and both push the pancreas to release insulin when glucose is high. GLP-1 also slows stomach emptying and acts on appetite centers in the brain.

The molecule is built on the GIP sequence and tuned to hit the GLP-1 receptor as well. It leans toward GIP in binding strength. A C20 fatty diacid lets it ride on albumin, so it lasts days instead of minutes.

GLP-2 TZ at a glance

• Compound: GLP-2 TZ (tirzepatide)
• Onyx Research label code: GLP-2 TZ
• Also known as: LY3298176
• CAS number: 2023788-19-2
• Molecular formula: C225H348N48O68
• Molecular weight: 4,813.5 g/mol
• Structure: 39 amino acids with a C20 fatty diacid side chain
• Amount per vial: 10mg
• Form: lyophilized (freeze-dried) powder in a crimp-sealed glass vial
• SKU: ONYX-GLP2TZ-10
• Use: laboratory research only

What the research reports

The SURMOUNT-1 trial (New England Journal of Medicine, 2022) reported average weight loss of up to about 21% over 72 weeks at the highest dose. The SURPASS trials covered blood sugar control in type 2 diabetes.

To read the studies yourself, open this PubMed search at the U.S. National Library of Medicine.

Similar research compounds

GLP-2 TZ acts on two incretin receptors, GIP and GLP-1. Other compounds in the same area take different routes:

• GLP-3 RT (GLP-3 RT, retatrutide) acts on three receptors: GIP, GLP-1 and glucagon
• Cagrilintide is a long-acting amylin analog, a fullness signal that runs apart from GLP-1
• GLP-1 SM (GLP-1 SM, semaglutide) is a once-weekly GLP-1 receptor agonist with a fatty-acid side chain
• AOD-9604 is the 176-191 tail of growth hormone, studied for fat breakdown
• MOTS-c is a short peptide encoded in mitochondrial DNA that switches on AMPK

Metabolic research comes at weight from several directions: incretin receptors, amylin, glucagon, a growth hormone fragment and the mitochondria. Every one of them is in stock in our weight loss peptides.

When your order arrives

The Onyx Research label names the compound and the amount. Compare both with your order confirmation, and check the crimp seal before the vial goes into storage.

Look for a dry powder. Loose pieces are fine. Wet or discolored material should stay out of your work, so contact us with a photo.

Log the date the vial arrived and, later, when and how you mixed it. It’s quick, and it saves a lot of guesswork if something goes wrong.

GLP-2 TZ dilution chart

These figures use the 10mg vial. For a bigger vial, multiply by the size difference.

• Add 1mL: 10mg/mL (1,000mcg per 0.1mL, or 10 units on a U-100 syringe)
• Add 2mL: 5mg/mL (500mcg per 0.1mL, or 10 units on a U-100 syringe)
• Add 3mL: 3.33mg/mL (333.3mcg per 0.1mL, or 10 units on a U-100 syringe)

Use bacteriostatic water, added slowly down the inside of the vial. Swirl, don’t shake. If some powder sticks to the glass, rest the vial in the fridge for a few minutes and swirl again.

Storing GLP-2 TZ

Sealed GLP-2 TZ lasts longest frozen at -20°C and dark. The fridge is fine for short spells. Mixed solution stays at 2 to 8°C and should be used within roughly 28 days.

Store mixed vials upright, so the liquid stays off the rubber stopper.

Related products

• GLP-1 SM 10mg (Semaglutide), a GLP-1 agonist
• Tesamorelin 10mg, a GHRH analog
• Cagrilintide 10mg, an amylin analog
• AOD-9604 5mg, an hGH fragment
• GLP-3 RT (Retatrutide), a triple agonist

See everything in our weight loss peptides, or start from the Onyx Research home page to browse every category.

GLP-2 TZ FAQ

How much is in a GLP-2 TZ vial?

10mg, as printed on the label.

What is in GLP-2 TZ?

Tirzepatide. GLP-2 TZ is the name printed on the Onyx Research label.

Which diluent should I use?

Most labs use bacteriostatic water, which we sell in three sizes. Check the chart on this page for the resulting strength.

What’s the right way to store it?

Freezer at -20°C while sealed, fridge at 2 to 8°C once mixed. Mixed solution is good for roughly four weeks.

Is there a crypto discount?

Yes. Pay with cryptocurrency at checkout and an extra discount comes off your order.

Buy GLP-2 TZ from Onyx Research

Add the peptide to your cart for $90.00. It’s in stock, and Onyx Research ships it free to the US, Canada, Europe, Australia and beyond.

Choose cryptocurrency at checkout and an extra discount comes off the total.

Building a larger order? See what else is in our weight loss peptides.

Research use only. Onyx Research supplies this material to qualified labs for in-vitro work. It’s not a medicine, supplement, food or cosmetic, and it must not be given to people or animals. No statement here has been reviewed by the FDA.