Description
Tesamorelin 20mg from Certified Peptides is 20mg of Tesamorelin in a sealed glass vial. Tesamorelin is a GHRH analog. It’s intended for lab research only.
What is Tesamorelin?
Tesamorelin is the full 44-amino-acid GHRH with a trans-3-hexenoyl group added. It’s FDA-approved as Egrifta for reducing abdominal fat in HIV-associated lipodystrophy.
It raises GH and IGF-1.
How Tesamorelin acts in the lab
Tesamorelin binds the GHRH receptor and raises growth hormone and IGF-1. The hexenoyl group on the front end stops DPP-4 from cutting it, which makes it far more stable than natural GHRH.
Its best-documented effect is on visceral fat, the fat around the organs, which is what the Egrifta approval was based on.
Tesamorelin 20mg product details
- Compound: Tesamorelin
- CAS number: 218949-48-5
- Molecular formula: C221H366N72O67S
- Molar mass: 5,135.9 g/mol
- Structure: 44 amino acids with a trans-3-hexenoyl group
- Amount: 20mg per vial
- Form: lyophilized (freeze-dried) powder
- Vial size: 5mL glass vial
- Purity: 99% or higher by HPLC
- Made in: USA
- SKU: CP-TESA-20
- Use: laboratory research only
Published Tesamorelin studies
Falutz and colleagues published the phase 3 trials in the New England Journal of Medicine in 2007.
Later studies looked at liver fat.
The primary literature is on PubMed. Here’s a search for Tesamorelin studies to start from.
How Tesamorelin compares
Labs choosing Tesamorelin 20mg usually weigh it against a few close relatives. Tesamorelin is full-length GHRH with a fatty acid cap, the only GHRH analog currently approved as a drug in the US, while:
- CJC-1295 No DAC is a stabilized GHRH(1-29) with a half-life of about 30 minutes, giving short, natural-looking pulses
- CJC-1295 DAC binds albumin and lasts about a week, giving a raised GH baseline instead of short pulses
- Sermorelin is the unmodified first 29 amino acids of GHRH, broken down within minutes
These are all GHRH analogs, acting on the same receptor. The real difference is how long each one lasts, which decides whether you get short pulses or a raised baseline. See them all on our growth hormone peptides page.
Tesamorelin 20mg reconstitution and concentration
Here’s the math for 20mg of powder:
- 1mL of bacteriostatic water gives 20mg/mL
- 2mL of bacteriostatic water gives 10mg/mL
- 3mL of bacteriostatic water gives 6.67mg/mL
Choose the volume that suits your measurements. Mark the vial with the concentration and date so nobody has to guess later. The vial itself holds 5mL, so that’s the upper limit.
Bacteriostatic water is the usual choice. Add it slowly so it runs down the side of the vial, then swirl or roll until everything dissolves. Shaking can shear peptide chains. Skip it.
Tesamorelin 20mg storage and shelf life
Store sealed vials of Tesamorelin 20mg in the freezer (-20°C) or the fridge (2 to 8°C), out of direct light. Mixed solution goes back in the fridge and should be used within about 28 days.
If you keep several vials going at once, our 10 vial container keeps them upright and together on a fridge shelf, and spare 3mL vial caps protect the stoppers once the seals are off.
How Tesamorelin 20mg is tested
Tesamorelin 20mg is made in the USA, and every batch goes to an independent U.S. laboratory before it’s sold. The lab confirms identity, measures the content and checks purity by HPLC. Our standard is 99% or higher.
Scroll through the photos at the top of the page and you’ll find the current batch’s certificate of analysis. We post the actual report, so you can check the figures yourself.
On top of purity, each batch is screened for endotoxins, heavy metals and sterility. For cell culture work that screen is often the more important number.
Other Tesamorelin strengths
- Tesamorelin 10mg: $89.00, about $8.90 per mg
- Tesamorelin 20mg (this page): $140.00, about $7.00 per mg
Tesamorelin 20mg is one of the larger sizes, and bigger vials cost less per milligram. It suits longer studies where you’d otherwise reorder.
Other growth hormone peptides to look at
- Tesamorelin Ipamorelin CJC-1295 Blend 15mg, Tesamorelin, Ipamorelin and CJC-1295 No DAC in one vial
- MK-777 Capsules 20mg (60 Count), an oral capsule format
- MK-677 Capsules 25mg (60 Count), an oral capsule format
- Tesamorelin Ipamorelin Blend 13mg, Tesamorelin and Ipamorelin in one vial
- Sermorelin 10mg, a GHRH analog
Browse the full growth hormone peptides range, or see every vial on our research peptides page.
Common questions about Tesamorelin 20mg
How much is in the Tesamorelin 20mg vial?
20mg of freeze-dried powder. The amount is printed on the label.
Is there a certificate of analysis for Tesamorelin 20mg?
Yes. The current batch’s COA is in the image gallery on this page.
What do I mix Tesamorelin 20mg with?
Sterile bacteriostatic water is the usual choice. The reconstitution section above shows the concentration for each volume.
How should I store it?
Keep sealed vials in the freezer for long-term storage or the fridge for a few weeks. Once mixed, refrigerate and use within about 28 days.
Can Tesamorelin be used in people or animals?
No. It’s sold for laboratory research only and isn’t approved for human or veterinary use.
Buy Tesamorelin 20mg from Certified Peptides
Order Tesamorelin 20mg now for $140.00. It’s in stock, and checkout takes about two minutes. Need water to mix it? Add a 10mL bacteriostatic water to the same order.
Need more for the same project? See the rest of our growth hormone peptides.
For laboratory research use only. Not for human or veterinary use. These statements have not been evaluated by the FDA.







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