Growth Hormone Secretagogues

Tesamorelin (Research Grade)

Tesamorelin is a stabilized growth hormone releasing hormone (GHRH) analog. A trans-3-hexenoyl group on the N-terminus resists DPP-4 cleavage, giving it far greater stability than native GHRH in visceral adipose research.

US cGMP Facility 99%+ HPLC Purity Public COAs Same-Day Dispatch

Shop Tesamorelin

Tesamorelin specifications

Reference data researchers look up before ordering tesamorelin. Every lot ships with documentation matching the batch number printed on the vial.

  • Class: GHRH analog
  • Half life: 26–38 minutes
  • Sequence: 44 amino acids, hexenoyl-modified
  • Storage: -20°C lyophilized

Tesamorelin purity testing and certificate of analysis

Each tesamorelin lot is released only after an independent purity panel. HPLC quantifies purity, LC-MS confirms molecular identity, and the lot-matched certificate is published so the number on your vial matches the report you download.

  • ≥99% HPLC purity specification
  • LC-MS mass confirmation on every batch
  • Endotoxin and sterility panel documentation
  • Lot-matched tesamorelin COA published on the certifications page

Tesamorelin reconstitution and BAC water ratios

Tesamorelin ships lyophilized. Reconstitute with bacteriostatic water containing 0.9% benzyl alcohol. The ratios below assume a standard U-100 insulin syringe.

  • 10mg vial + 2mL BAC water = 5mg per mL (10 units = 500mcg)
  • 10mg vial + 1mL BAC water = 10mg per mL (10 units = 1mg)
  • Reconstitute slowly down the vial wall onto the cake
  • Use within 14 days once reconstituted and refrigerated

Where to buy tesamorelin

PX1 Research synthesizes and fills tesamorelin in a US cGMP-compliant facility rather than reselling imported material, so purity documentation traces back to the production lot. Multi-vial pricing steps down at 3, 5 and 10 vials, and subscription intervals are available on the product page.

Reconstitution calculator

Convert vial strength and bacteriostatic water volume into exact insulin-syringe unit marks.

Peptide reconstitution calculator

Vial strength (mg)
Bacteriostatic water (mL)
Target dose

Concentration

5 mg/mL

Draw volume

0.05 mL

Insulin syringe

5 units (IU)

U-100 insulin syringe (100 units = 1 mL)

5 IU
020406080100

10 mg + 2 mL = 5 mg/mL. A 250 mcg dose = 5 units on a U-100 syringe (40 doses per vial).

For laboratory and research use only. Not for human or veterinary use.

Need solvent? Buy bacteriostatic water (10mL / 30mL)

Frequently asked questions

Tesamorelin vs sermorelin — what is the difference?

Both are GHRH analogs, but tesamorelin carries a hexenoyl modification that resists enzymatic breakdown, so it stays intact far longer than sermorelin.

Why pair tesamorelin with ipamorelin?

Tesamorelin acts on the GHRH receptor while ipamorelin acts on the ghrelin/GHS receptor — two separate pathways studied together for additive signaling.

Is a certificate of analysis provided with tesamorelin?

Yes. Every tesamorelin lot has a published, lot-matched COA showing HPLC purity and LC-MS identity confirmation.

How should tesamorelin be stored?

Store the lyophilized vial at -20°C protected from light. Once reconstituted with bacteriostatic water, keep it refrigerated at 2–8°C.

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