Research peptides are synthetic versions of naturally occurring peptide compounds, produced for in vitro laboratory research purposes. They are not medicines and are not approved for human consumption. All products supplied by Pureline Biolabs are strictly for laboratory research use only.
All Pureline Biolabs products are supplied at a minimum of 99% purity as verified by independent HPLC analysis conducted by Janoshik Analytical. Every batch is tested before dispatch and results are publicly accessible via the QR code on every vial.
Yes. Research peptides are legal to purchase and possess in the UK for genuine laboratory research purposes. They are not licensed medicines and are not controlled substances. Pureline Biolabs Ltd is a registered UK company selling these compounds strictly under research use only conditions with no therapeutic claims.
Yes — every product comes with an independent Certificate of Analysis from Janoshik Analytical. The QR code on every vial links directly to the live publicly accessible certificate for that specific batch showing HPLC purity data and mass spectrometry identity confirmation.
Browse our product catalogue, add items to your basket and proceed to checkout. You must confirm at checkout that you are 18+ and that all products are for laboratory research purposes only. Payment is accepted via bank transfer using our secure open banking system.
We accept payment via Pay by Bank — FCA authorised open banking that connects directly to your UK bank account. This is fast, secure and requires no card details. We also accept payment via bank transfer for larger orders.
Yes — we offer competitive pricing for larger orders. Please contact us at info@purelinebiolabs.com with your requirements and we will provide a custom quote within 24 hours.
Orders can be cancelled or amended within 2 hours of placement provided they have not already been dispatched. Please contact us immediately at info@purelinebiolabs.com if you need to make any changes.
All orders are dispatched via Royal Mail Special Delivery or equivalent tracked next day courier. Products are packed in insulated cold chain packaging with gel ice packs to maintain 2-8°C throughout transit. All packaging is discreet with no external branding indicating the contents.
Orders placed before 2pm Monday to Friday are dispatched same day for next day delivery. Orders placed after 2pm or at weekends are dispatched the following working day. We currently deliver to UK mainland addresses only.
Yes — all orders are shipped in plain unmarked packaging. The sender address shows Pureline Biolabs Ltd but there is no external indication of the contents. Your privacy is important to us.
Currently we ship to UK mainland addresses only. We are exploring international shipping options and will update our policy when international delivery becomes available.
Lyophilised peptide powders should be stored at 2-8°C for short term use (up to 3 months) and at -20°C for long term storage. Always protect from light and moisture. Keep vials sealed until ready for use in your research protocol.
Add bacteriostatic water slowly to the lyophilised powder using a sterile syringe. Allow the powder to dissolve without mechanical agitation or shaking. See our reconstitution calculator for guidance on volumes and concentrations.
Yes — we supply bacteriostatic water in 10ml vials. It is available to add to any order. Bacteriostatic water contains 0.9% benzyl alcohol which prevents bacterial growth in reconstituted peptide solutions during the research period.
All products are independently tested by Janoshik Analytical — a globally respected specialist peptide testing laboratory. Janoshik performs HPLC purity analysis and mass spectrometry identity confirmation on every batch.
Scan the QR code on your vial with any smartphone camera. This links directly to the live Janoshik Analytical certificate for your specific batch. You can also visit our Lab Reports page and enter your batch number to access your certificate.
High Performance Liquid Chromatography (HPLC) measures the purity of the compound — confirming what percentage of the material is the target peptide versus impurities, salts or synthesis byproducts. Mass spectrometry confirms the identity by measuring the molecular weight.
Due to the nature of research chemicals and cold chain requirements we are unable to accept returns of opened products. If your order arrives damaged please contact us within 24 hours with photographic evidence and we will arrange a replacement or refund.
Please photograph the damaged packaging and products immediately and contact us at info@purelinebiolabs.com within 24 hours of receipt. We will arrange a replacement shipment or full refund as appropriate.
Email us at info@purelinebiolabs.com and we will respond within 24 hours Monday to Friday. Alternatively use the contact form on our Contact page.
Our team is here to help. Get in touch and we will respond within 24 hours.