Peptides with verified purity and COA certificate

Every batch is independently tested with HPLC and mass spectrometry. The lab report is available before purchase, together with cold-chain delivery.

HPLC ≥99 %MS validationCOA for every batch
Vials of lyophilized peptides on a white surface

Check batch

Lab report before purchase

Enter the batch number from the label or the product description.

Batch PT-2611-TZ

Tirzepatide · 10 mg

Purity 99,4 %
tR 12,4 min

HPLC

99,4 %

MS match

Confirmed

Endotoxins

Below limit

Download PDF report

Shop by goal

Choose a research area

The catalog is divided into three areas so you can quickly find the right formulations.

Most searched peptides

Tested formulations

Tirzepatide and Retatrutide ship immediately. Other products are delivered within 3 weeks.

In stock – add to cart now

Energy and metabolism

10 mgHPLC 99,4 %
119,00 €
In stock – add to cart now

Energy and metabolism

10 mgHPLC 99,2 %
139,00 €
Pre-order – delivery in 3 weeks

Energy and metabolism

5 mgHPLC 99.1%
89,00 €
Pre-order – delivery in 3 weeks

Regeneration

5 mgHPLC 99.3%
49,00 €
Work in a laboratory clean room

Quality and testing

Four checks for every batch

Testing is carried out by an independent analytical laboratory, and the results are published with the product.

HPLC purity

Liquid chromatography shows the proportion of the target molecule.

MS identity

Mass spectrometry confirms the molecular weight.

Endotoxins and sterility

Screening test for bacterial endotoxins.

COA for the batch

PDF report with batch number and analysis date.

From synthesis to your door

How a batch reaches you

Every step has a clear timeframe and responsibility.

Step 1

Synthesis

The peptide is synthesized and lyophilized into vials.

Step 2

Independent testing

A batch sample is tested for HPLC, MS, and endotoxins.

Step 3

Cold packaging

Insulated packaging with ice packs.

Step 4

Discreet delivery

Neutral package with no indication of contents.

Vials and packaging

Storage and handling

Proper storage preserves purity

  • Refrigerator 2–8 °C

    Immediately upon receipt. For long-term storage, freeze at −20 °C.

  • Protection from light

    Keep vials in the original box.

  • Reconstitution

    Use the reconstituted peptide within the period stated in the report.

Science

Latest articles

Expert articles in Slovenian and Croatian about peptide research.

BPC-157: what research says about tissue regeneration

Regeneration · 12. 10. 2026

BPC-157: what research says about tissue regeneration

HR: BPC-157: what research says

GLP-1 peptides: semaglutide, tirzepatide, and retatrutide

Metabolism · 28. 9. 2026

GLP-1 peptides: semaglutide, tirzepatide, and retatrutide

HR: GLP-1 peptides: a comparison

GHK-Cu and skin: the copper peptide under the microscope

Longevity · 14. 9. 2026

GHK-Cu and skin: the copper peptide under the microscope

HR: GHK-Cu and skin

Frequently Asked Questions

Answers before you order

Can't find the answer? See all answers on the FAQ page.

Enter your batch number, for example PT-2611-TZ, into the "Check batch" field. We'll show you the HPLC chromatogram, MS match, and purity, and you can download the report as a PDF even before purchase.

Every batch tested. No compromises.

Newsletter

New batches, stock arrivals, and new articles

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