Lot T522 Save $31 Tesamorelin Research Peptide

Research peptide · Lyophilized

Tesamorelin Research Peptide

Tesamorelin — USA Made, ≥99% Purity

4.9 177 verified reviews

44-amino-acid GHRH analog supplied in a 5mg lyophilized vial
USA manufactured in GMP-certified California and Arizona laboratory facilities
≥99% purity target with third-party HPLC, mass spectrometry, and batch COA

Vial Size

Vial size

Clear

Manufactured in a GMP facility · Independently tested · Batch COA

Dispatched from a US warehouse within 48 hours, tracked

Certificate of analysis for lot T522 below

Disclaimer

For research purposes only. Not intended for human consumption, medical use, diagnosis, treatment, or prevention of disease.

Specifications

Lot T522

Purity target

≥99%

≥99% (3rd-Party HPLC Tested)

Molecular mass

5,136

g/mol, confirmed by mass spectrometry

Residues

Synthetic amino-acid chain

Sequence

N-terminal trans-3-hexenoyl-YADAIFTNSYRKVLGQLSARKLLQDIMSRQQGESNQERGARARL

CAS: 218949-48-5
Molecular mass: 5,136 g/mol
Purity target: ≥99% (3rd-Party HPLC Tested)
Form: Lyophilized Powder
Origin: Manufactured, Formulated & Packaged in CA/AZ, USA
Storage: Store at -20°C (Freeze) or 2–8°C (Refrigerated) protected from light

What is Tesamorelin?

Tesamorelin is a 44-amino-acid synthetic analog of growth hormone-releasing hormone with an N-terminal trans-3-hexenoyl modification. Researchers use the defined molecule to study GHRH-receptor activation and downstream growth-hormone-axis signaling.

Tesamorelin is also the active ingredient in an FDA-approved prescription medicine. This 321 Peptides 5mg research vial is not that approved finished drug, has not been reviewed as therapeutically equivalent, and is supplied only for non-clinical work.

How It Works

Engages the GHRH receptor: Tesamorelin models the signaling action of endogenous growth hormone-releasing hormone.

Activates pituitary signaling: Receptor stimulation promotes cAMP-dependent pathways associated with growth hormone synthesis and release.

Produces downstream research signals: Growth-hormone activity can influence IGF-1 and other pathway markers measured in controlled systems.

Analytical data

Every lot, on the record

Independent third-party HPLC evaluates the purity target, while mass spectrometry confirms molecular identity. Both results are documented in one combined, batch-specific Certificate of Analysis.

Purity (HPLC-UV)

99.58%

Net content

9.85 mg

Reported

2026-04-23

Identity (LC-MS): Confirmed
Appearance: White Lyophilized Powder

HPLC MS

Analyte	Method	Result
Identity	LC-MS	Tesamorelin
Purity	HPLC-UV	99.58%
Net Content		9.85 mg

Chromatogram

Mass confirmation

Download COA (PDF)

Why Source from 321 Peptides?

Domestic synthesis you can trace.

Tesamorelin is manufactured and finished in GMP-certified California and Arizona laboratory facilities, not sourced from overseas or Mexico.

Long-sequence verification.

Independent HPLC assesses the ≥99% purity target and mass spectrometry checks molecular identity. Both findings appear on one batch-specific COA.

Freeze-dried protection.

Lyophilization helps preserve this 44-residue peptide during storage and transit. Domestic fulfillment keeps shipping faster and more accountable.

Lot history 7 released lots

Every batch released under this compound, with the figure reported for each.

Lot	Reported	Purity	Net content	COA
TE-76080 Superseded	2026-05-06	99.46%	5.01 mg	Pending
TE-76657 Superseded	2026-05-02	99.58%	5.02 mg	Pending
TE-32025 Superseded	2026-04-23	99.46%	10.00 mg	Pending
T522	2026-04-23	99.58%	9.85 mg	PDF
TE-33179 Superseded	2026-04-08	99.83%	10.02 mg	Pending
TE-75503 Superseded	2026-04-08	99.49%	5.01 mg	Pending
TE-32602 Superseded	2026-03-19	99.58%	10.01 mg	Pending

Frequently Asked Questions

What is Tesamorelin?

Tesamorelin is a modified 44-amino-acid analog of growth hormone-releasing hormone. It is studied for GHRH-receptor and growth-hormone-axis signaling.

How does Tesamorelin work?

Tesamorelin activates the GHRH receptor, which signals pituitary cells to synthesize and release growth hormone. Researchers can then examine downstream markers such as IGF-1 in appropriate models.

Is this Tesamorelin the FDA-approved medicine?

No, this 321 Peptides research vial is not the FDA-approved tesamorelin drug product. It is not intended for human consumption or as a substitute for a prescription medicine.