How do you verify peptide purity?

Every batch is analyzed by independent third-party laboratories using HPLC and mass spectrometry. Certificates of Analysis (COA) are available for products, detailing purity percentage, molecular weight confirmation, and chromatographic data.

What shipping methods do you use?

We ship with temperature-controlled packaging where appropriate for lyophilized peptides. Orders are processed within 12 hours; delivery times vary by region (e.g. 2–7 business days to USA, Canada, Australia, and UK). Shipping rate is shown at checkout. Tracking is emailed after dispatch — use Post Track or 17 Track for the most accurate updates.

How should peptides be stored?

Lyophilized peptides should be stored at -20°C for long-term stability. Once reconstituted, store at 4°C and use within the timeframe specified in product documentation. Avoid repeated freeze-thaw cycles.

Research-Grade Peptides

Buy Peptides Online.99%+ purity. Every batch documented.

Q: What does "Research Use Only" mean?

Research Use Only (RUO) designates that these compounds are intended strictly for laboratory research purposes. They are not approved for human consumption, diagnostic use, or therapeutic applications. All customers must confirm they are qualified research professionals before purchase.

Research-use only. Cold-chain shipping to qualified labs.

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Testimonials

Trusted by Researchers Worldwide

“Exceptional purity consistency for our longitudinal studies.”

Dr. Sarah Chen

Stanford Research

“Reliable cold-chain shipping and great scientific support.”

Michael Torres

MIT Bioengineering

“HPLC-MS verification gives us total confidence in our data.”

Emily Watson

Oxford Molecular

“Batch-level COAs are easy to pull from the library before each run.”

Helix Core Lab

Independent CRO

“Consistent batch documentation makes our QC workflow straightforward.”

James Okonkwo

Cambridge Analytical

“Fast fulfillment and responsive support on compound specifications.”

NovaPeptide Group

Contract research

Popular

Best Selling Peptides

Best selling peptides from the Tetrava Labs catalog

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BPC-157 (5mg / 10mg)

$29.00 – $39.00 /vial

from $39.00/vial · packs from $39.00

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Semaglutide (5mg / 10mg)

$69.00 – $89.00 /vial

from $89.00/vial · packs from $89.00

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Tirzepatide (5mg / 10mg / 20mg / 50mg)

$33.00 – $49.00 /vial

from $49.00/vial · packs from $49.00

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Retatrutide (5mg / 10mg / 20mg / 50mg / 100mg)

$149.00 – $209.00 /vial

from $209.00/vial · packs from $209.00

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The Best Place to Buy Peptides Online

Looking for the best place to buy peptides online? Tetrava Labs supplies research-grade peptides with verified purity, third-party lab testing, and lot-linked COAs — so you know exactly what you're ordering before it ships.

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COA IncludedCertificate of Analysis

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See the Data Before You Buy

Every batch is independently tested using HPLC-MS analysis. We publish lot-linked Certificates of Analysis for compounds in our catalog.

HPLC purity verification (≥99%)
Mass spectrometry molecular weight confirmation
Batch-specific COAs with chromatograms
Free download for all verified customers

Browse COA Library

BPC-157 5mg — Batch A001

COA99.00% purityTested 6/1/2026

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Shop by Research Area

Specialized compounds organized by application

GLP-1 Research

Shop GLP-1 research peptides with verified 99%+ HPLC-MS purity, lot-linked COAs, and cold-chain shipping. Research use only (RUO).

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Tissue Repair

Shop tissue repair research peptides including BPC-157, TB-500, and GHK-Cu. Verified 99%+ HPLC-MS purity with lot-linked COAs. RUO.

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Growth Hormone Axis

Shop growth hormone axis research peptides including CJC-1295, Ipamorelin, and Sermorelin. Lot-linked COAs and cold-chain shipping. RUO.

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Longevity & Neuropeptides

Shop longevity and neuropeptide research compounds including Epithalon, Selank, and Semax. Verified purity with lot-linked COAs. RUO.

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Metabolic & Mitochondrial

Shop metabolic and mitochondrial research peptides including MOTS-c, NAD+, and SS-31. HPLC-MS verified with lot-linked COAs. RUO.

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Research Blends

Shop research peptide blends with complementary compounds, verified 99%+ HPLC-MS purity, lot-linked COAs, and cold-chain shipping. RUO.

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Research Hub

Latest research articles

Protocols, analytics, and compliance for qualified buyers

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Protocols

Retatrutide Benefits Beyond Weight Loss: What the 2026 Trial Data Actually Show

Retatrutide's liver, knee, kidney, and lipid results — fact-checked against primary trial sources and sorted by evidence tier, from published data to still-preclinical claims.

8/12/20269 min read

Analytical

BPC-157 vs TB-500: The Hidden Truth About What's in the Vial

Comparing BPC-157 vs. TB-500? Uncover the clinical evidence—and the hidden chemical truth behind TB-500's borrowed research.

8/8/20267 min read

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Research Use Only Disclaimer

All products are intended for laboratory research purposes only. Not approved for human consumption, diagnostic use, or therapeutic applications. By purchasing, you confirm you are a qualified research professional.