Research Peptide Guide
A structured reference for laboratory researchers covering peptide formats, purity standards, COA interpretation, and storage requirements.
Peptide Formats
Research peptides are available in four primary delivery formats. The choice of format affects reconstitution requirements, stability, and storage conditions.
Purity Standards
HPLC (High-Performance Liquid Chromatography) is the industry standard for measuring peptide purity. It separates the target peptide from impurities and expresses purity as a percentage of total peak area.
Reading a Certificate of Analysis
A COA is the primary quality assurance document for a research peptide. Verify these fields before use:
Storage Requirements
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Frequently Asked Questions
What are research-grade synthetic peptides?
Research-grade synthetic peptides are short amino acid chains produced for in vitro laboratory use. They are not approved for human consumption. Purity is typically verified by HPLC (≥99%) and confirmed by a Certificate of Analysis (COA) from an accredited third-party laboratory.
What formats do research peptides come in?
Synthetic peptides are available as lyophilised (freeze-dried) powder in vials, pre-mixed in bacteriostatic water, nasal spray solutions, and oral capsules. Each format has different reconstitution requirements and stability profiles. Vials offer the longest shelf life when stored correctly.
How do I read a Certificate of Analysis (COA)?
A COA should state: the peptide name and batch number, HPLC purity percentage (research grade is ≥99%), molecular weight confirmation by mass spectrometry, and the testing laboratory's name and accreditation. Verify the batch number matches your product label. Stackpure provides COA for every batch on request.
How should research peptides be stored?
Lyophilised peptide vials are stable at −20 °C for up to 24 months. Once reconstituted, store at 4 °C and use within 30 days. Avoid repeated freeze-thaw cycles. Keep away from light and moisture. Capsule formulations should be stored at room temperature in a cool, dry location.
What purity standard does Stackpure use?
Stackpure requires a minimum of 99% HPLC purity for all 204 SKUs. Every batch is tested by an independent third-party laboratory and a COA is available for every batch. This exceeds the ≥95% threshold commonly marketed as "research grade" by lower-tier suppliers.