Tirzepatide
GLP2-T · Dual GIP/GLP-1 agonist
High-affinity dual GIP/GLP-1 receptor agonist for metabolic and glucose research. Manufactured in a US cGMP facility with lot-matched public COAs.
10mg · $94.995mg · $54.99CAS 2023788-19-2
USA-Made Research Peptides
Peptides for Sale
Buy peptides online from a trusted American supplier. Every vial is manufactured in a US cGMP facility, quantified by HPLC to 99%+ purity, and backed by a public, lot-matched certificate of analysis.
US cGMP Facility
99%+ HPLC Purity
Public COAs
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Featured Research Peptides
Click any compound to view sizes, pricing, COA data, and specifications.
99.4% Pure
BPC-157
Body Protection Compound-157
15-amino-acid pentadecapeptide studied for tissue recovery and gastric integrity research. 8× tested, endotoxin screened, and identity confirmed by LC-MS.
10mg · $84.995mg · $48.99CAS 137525-51-0
Retatrutide
GLP3-R · Triple GIP/GLP-1/GCGR agonist
Triple-hormone receptor agonist for advanced metabolic and energy-expenditure research. Lyophilized vials ship with HPLC, LC-MS, and endotoxin documentation.
10mg · $99.995mg · $59.99CAS 2381089-83-2
ISO Testing & Lab Compliance Guide
We release peptides only after independent ISO/IEC 17025 laboratories verify identity, purity, and safety. Here is what every lot undergoes before it reaches your research bench.
HPLC Purity Quantification
Every finished peptide lot is analyzed by reversed-phase high-performance liquid chromatography (HPLC) to confirm target purity ≥99% and to resolve major impurities before release.
LC-MS Identity Confirmation
Electrospray liquid chromatography-mass spectrometry (LC-MS) verifies the molecular weight and sequence identity of each batch against the reference standard.
Endotoxin & Sterility Screening
Limulus amebocyte lysate (LAL) and PCR-based sterility assays are performed to ensure endotoxin levels below 0.5 EU/mL and no detectable microbial growth.
Public Certificates of Analysis
Each COA is published to our public library. Researchers can cross-check lot numbers, purity values, test dates, and ISO/IEC 17025 laboratory credentials before ordering.
What "99%+ HPLC Purity" Means
HPLC purity is the percentage of the target peptide peak area relative to all detectable UV-absorbing peaks in the chromatogram. A result of 99%+ means the target compound represents at least 99% of the integrated signal, indicating minimal side products, truncated sequences, and degradation. This metric is reported on every PX1 Research COA alongside retention time, method conditions, and the qualifying analyst signature.
HPLC≥99% target peak area
LC-MSMW ±1 Da of theoretical
Endotoxin<0.5 EU/mL
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