Primary BioLabs

About Primary BioLabs

Research-grade peptides.
Verified. Every lot.

Primary BioLabs supplies synthetic research peptides to laboratories and independent researchers. Every product is independently tested and ships with a full Certificate of Analysis.

≥98%
Minimum purity on every product
100%
Of lots ship with a COA
3rd
Party independent lab testing
0
Tolerance for undisclosed impurities

The Science

What are research peptides?

Amino acid chains

Peptides are short chains of amino acids — the building blocks of proteins. They are defined by having fewer than 50 amino acid residues, making them smaller and more targeted than full proteins.

Signaling molecules

In biological systems, peptides act as signaling molecules — hormones, neurotransmitters, and growth factors are all peptidergic. Their compact size allows precise interaction with specific cell receptors.

Research tools

Synthetic peptides allow researchers to study receptor binding, gene expression, and cellular processes in controlled in-vitro environments without the complexity of full protein structures.

Research use only. All peptides sold by Primary BioLabs are intended exclusively for in-vitro laboratory and preclinical research. They are not approved for human or animal administration and carry no therapeutic claims.

Quality Documentation

Certificates of Analysis

A Certificate of Analysis (COA) is issued by an accredited analytical laboratory and reports the results of quality tests performed on a specific lot of a substance.

Our COAs are produced by independent third-party laboratories — not by the manufacturer. This distinction matters: a manufacturer's own COA is not independent verification.

Every COA includes the lot number, test date, analytical methods used (HPLC and mass spectrometry), the measured purity result, and the lab's accreditation details. Your order's lot number maps directly to a specific COA for your exact batch.

HPLC Purity Testing
High-Performance Liquid Chromatography separates the components of your peptide and measures the percentage of the target compound against all other substances present.
Mass Spectrometry
Mass spec confirms the molecular weight of the compound matches the expected mass of the peptide sequence, verifying that the correct compound was synthesized.
Lot-Matched Documentation
Every order ships with a lot number that maps to a specific COA so you can verify the exact batch you received — not a generic result from a different production run.

Logistics

Packaging & Shipping

Lyophilized powder

All peptides ship as lyophilized (freeze-dried) powder, which maximizes shelf life and maintains stability during transit without requiring refrigeration.

Temperature-controlled

Orders are packed with insulated packaging and ice packs when conditions warrant. All shipments are sent within 1–3 business days of order confirmation.

Discreet packaging

All orders ship in plain, unmarked packaging with no branding visible on the outside. Packing slips use generic descriptions for privacy.

Browse our catalog

Every product ships with independent third-party testing documentation.

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