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Oxford Research Peptides
THIRD-PARTY TESTED

Certificates of Analysis

Independent analysis reports issued by Janoshik Analytical, listed by compound and strength as supplied. Each link opens the verifiable report hosted by the laboratory.

Retatrutide

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  • 10mg99.74%
    Janoshik Analytical · HPLC · Batch EGB-0226-RT10 · 02 Mar 2026
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  • 20mg99.87%
    Janoshik Analytical · HPLC · Batch EGB-0126-RT20 · 20 Jan 2026
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  • 20mg99.20%
    Janoshik Analytical · HPLC · Batch EGB-0226-RT20 · 13 Feb 2026
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  • 30mg99.46%
    Janoshik Analytical · HPLC · Batch EGB-0426-RT30 · 23 Apr 2026
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  • 30mg99.74%
    Janoshik Analytical · HPLC · Batch EGB-RT30-BBG50 · 20 Jan 2026
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  • 40mg99.89%
    Janoshik Analytical · HPLC · Batch EGB-0126-RT40 · 20 Jan 2026
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Tirzepatide

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  • 10mg99.83%
    Janoshik Analytical · HPLC · Batch EGB-0126-TR10 · 21 Jan 2026
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  • 30mg99.87%
    Janoshik Analytical · HPLC · Batch EGB-0526-TR30 · 23 Apr 2026
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  • 40mg99.77%
    Janoshik Analytical · HPLC · Batch EGB-0126-TR40 · 20 Jan 2026
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  • 50mg99.71%
    Janoshik Analytical · HPLC · Batch EGB-0126-TR50 · 20 Jan 2026
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  • 50mg99.97%
    Janoshik Analytical · HPLC · Batch EGB-0226-TR50 · 02 Mar 2026
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  • 60mg99.84%
    Janoshik Analytical · HPLC · Batch EGB-0126-TR60 · 20 Jan 2026
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GHK-Cu

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  • 50mg99.93%
    Janoshik Analytical · HPLC · Batch WWB-EGB0625GKU-50 · 02 Jul 2025
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BPC-157 / TB-500 Mix

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  • 20mg blendBPC-157 10.1mg / TB-500 11.0mg
    Janoshik Analytical · HPLC (quantitation) · Batch WWB-EGB0725TBBC-20 · 18 Aug 2025
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Tesamorelin

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  • 10mg99.29%
    Janoshik Analytical · HPLC · Batch EGB-WWB1125-TSM10 · 26 Nov 2025
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SS-31

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  • 50mg99.76%
    Janoshik Analytical · HPLC · Batch WWB-EGB0625SS31-50 · 02 Jul 2025
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PT-141

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  • 10mg99.63%
    Janoshik Analytical · HPLC · Batch WWB-EGB0625PT-10 · 02 Jul 2025
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Reports are batch-specific. If you need the report matching the batch number printed on your vial label, email info@oxfordresearchpeptides.com with your order and batch number. See our COA policy and Research Use Only notice.