USA lab tested research peptides: General Peptide KLOW Blend, BPC-157 + TB-500 and Retatrutide vials on a laboratory bench

Pure Research Peptides USA Lab Tested

Shop the direct source for pure research grade peptides. Lab direct. Low prices. No gimmicks.

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Batch COA on every product  ·  Free overnight shipping over $250

General Peptide research vials
≥99% HPLCPurity on every batch
ISO 17025 VerifiedAccredited third-party labs
USA TestedIndependent US laboratories
Batch testing

Not all peptides are created equal.

General Peptide offers full transparency you can trust.

At General Peptide, each bottle is batch tested for purity, potency, sterility, heavy metals, residual solvents, endotoxins and microbiological contaminants and includes a unique batch testing ID linked to a comprehensive certificate of analysis.

PurityPotencySterilityHeavy metalsResidual solventsEndotoxinsMicrobiological
HPLC instrument with sample vials in an analytical testing laboratory
Batch testing IDGP-XXXX-XX
GENERAL PEPTIDEGP-XXXX-XX
Certificate of Analysis
Purity (HPLC)≥99.0%
PotencyConforms
SterilityPass
EndotoxinsPass
Heavy metalsPass
Example layout — not a real result
Our standard

Built on four commitments.

Four promises behind every vial we ship — each one you can check on the certificate of analysis.

About General Peptide
01Precision

≥99% or it doesn't ship.

Every compound, every batch — held to the same uncompromising analytical standard.

HPLC result on every COA
02Transparency

Results before your money.

Certificates of analysis are published before purchase — not promised afterward.

Batch ID on every bottle
03Purpose

Built for real research.

Every product exists to support rigorous, reproducible scientific investigation.

Research use only, always
04Independence

Labs we don't own.

Testing by ISO 17025-accredited US labs with no commercial ties to General Peptide.

Lab named on each certificate
Quality assurance

Comprehensive COAs on every batch.

Most suppliers test for purity. We go further — verifying everything purity testing can't see.

01

HPLC purity

Purity ≥99%, full chromatogram on the COA.

02

Mass spectrometry

Confirms molecular identity and sequence.

03

Net content

Measured mg matches the label.

04

Heavy metals

Lead, mercury, arsenic, cadmium screened.

05

Microbiological

Bacterial and fungal contamination.

06

Residual solvents

Leftover synthesis solvents screened.

Why it matters

A compound can look pure and still carry contaminants.

Every certificate is generated by an independent, ISO 17025-accredited US lab and published at generalpeptide.com before any order is placed. Batch-specific. Never generic.

Browse COA library
What the certificate coversPurity-only COAGeneral Peptide COA
HPLC purity✓✓
Mass spec identity—✓
Net content (mg)—✓
Heavy metals—✓
Microbiological—✓
Residual solvents—✓
Batch-specific, published before sale—✓
Research purpose

Shop by research purpose.

Every compound is grouped by the research area it is most studied in. Pick an area to see what's available.

View all 28 compounds

Tissue repair

Shop all
Buy Retatrutide 10mg research peptide vial – ≥99% purity, USA lab tested | General Peptide 123
Label system

Clean. Clinical. Unambiguous.

Every General Peptide vial carries a clear, clinical label system — compound name, research classification, and verified content, exactly as tested. No ambiguity. No marketing language where analytical data should be.

  1. 1
    Compound and strengthName and classification precisely as verified by MS identity; net content verified by independent analysis.
  2. 2
    Purity and lot numberLot number traceable to full COA documentation at generalpeptide.com.
  3. 3
    Colour band by research areaTissue repair, metabolic, endocrine and more — coded at a glance.
  4. ✓
    Research use onlyResearch Use Only designation on every vial, every label.
Scientist in a lab coat using a microscope
Regulatory compliance

Research use only.

For in vitro laboratory and scientific research use only.

  • For in vitro laboratory and scientific research use only
  • Not for diagnostic, therapeutic or prophylactic applications
  • Not for use in humans under any circumstances
  • Not for use in animals — veterinary or otherwise
  • Not FDA-evaluated or approved by any regulatory authority
  • Must be handled by qualified scientific personnel only
  • Purchasers assume full compliance responsibility under applicable federal, state and local law
  • Use must comply with the purchaser's institutional biosafety protocols
Researcher responsibility

General Peptide sells research compounds exclusively for qualified laboratory research. All purchasers represent that they are researchers, scientists, or laboratory professionals with the training and institutional oversight necessary for the safe and lawful use of research compounds.

Product documentation is provided for scientific background only and does not constitute medical advice, therapeutic guidance, or direction for use in any application beyond qualified in vitro research. By purchasing any compound from General Peptide, purchasers acknowledge and accept these terms in full.