Frequently Asked Questions
Frequently Asked Questions
Find answers to common questions about research peptides, Third Party Certificates of Analysis (COAs), peptide storage, shipping, payment methods, and ordering from PhD Peptides.
Orders & Shipping
Yes. Free shipping is available when spending over £20.
UK orders are dispatched from the United Kingdom. EU orders are dispatched from within the European Union.
Orders placed before 3:00pm are normally dispatched the same business day. Orders placed after 3:00pm GMT are normally dispatched the next business day.
United Kingdom: Typically 1 to 2 business days.
European Union: Typically 5 to 7 business days. UPS Express: Faster delivery is available at an additional cost, with most EU destinations delivered within 1-2 business days.
Delivery times for international destinations vary depending on location and local postal services.
UK orders are shipped using Royal Mail Tracked 24.
EU orders are dispatched using International Standard Mail or International Priority Tracked Mail, depending on destination and service selected. UPS Express: Faster delivery is available at an additional cost, with most EU destinations delivered within 1-2 business days.
Yes. Tracking information is provided once your order has been dispatched.
Yes. Courier shipping options are available upon request through UPS. Additional charges apply and a quotation can be provided before dispatch.
Delivery investigations may be initiated after 7 working days for UK orders, 14 working days for EU orders, and 21 working days for Rest of World orders.
If a shipment is confirmed as lost, we will normally offer a replacement or refund.
Products & Quality
PhD Peptides supplies research peptides, NAD+ products, reconstitution solutions, and laboratory supplies intended for laboratory and research purposes.
Yes. Every peptide batch supplied by PhD Peptides is supported by a Third Party Certificate of Analysis (COA).
Yes. You can view the current batch Certificate of Analysis before ordering, using the batch summary or the Certificate of Analysis tab on the product page. You can also search the COA Library by product or batch code. Our guide to reading a peptide COA explains how to match the report to the vial.
Yes. Contact our team with your order reference and the batch code printed on the vial or packaging. We can help you locate the documentation for the batch supplied.
Yes. The independent reports in the COA Library include HPLC chromatograms where reported by the testing laboratory. Check the report for your batch, or contact us if you need help locating the analytical record. Our HPLC purity guide explains the peaks and reported percentage.
Yes. All peptide batches undergo independent third party verification testing.
Most peptide batches are supplied at 98% purity or higher, with many testing at 99% purity or higher. Check the product specification and current independent batch COA for the material you are ordering. HPLC purity and measured peptide quantity describe different results; our purity versus quantity guide explains the distinction.
Follow the storage instructions on the product page and vial. Conditions depend on the material and whether it is a sealed lyophilised powder or a prepared laboratory solution. Our research peptide storage guide explains how temperature, moisture and handling affect laboratory materials.
Peptide products are stored in temperature controlled freezers maintained at -20°C, with double redundancy, to help preserve product integrity before dispatch.
Yes. Our research peptides are supplied as lyophilised, or freeze-dried, material in sealed laboratory vials. Read why research peptides are freeze-dried for an explanation of the process and why the visible cake does not tell you the peptide quantity.
Yes. Use the batch code on your product label to match the vial to its published analytical record in the COA Library. Our batch traceability guide explains why keeping that code with your laboratory records matters.
Yes. Independent Eurofins sterility and bacterial endotoxin reports for lot 145675 are published on our bacteriostatic water documentation page and in the product pages’ Certificate of Analysis tab. Match the lot and batch details to your vial or packaging. The results apply to the samples tested and support laboratory research use only.
Payments, Returns & Support
We currently accept Visa, Mastercard and American Express credit or debit card payments. Plus secure Open Banking payments in the UK, and direct bank transfers within the European Union.
Open Banking allows customers to make secure payments directly from their bank account using their banking app or online banking service without entering card details.
Yes. Our website uses SSL encryption and Open Banking payments are authorised through your own bank’s secure authentication systems.
Orders may normally be cancelled before dispatch. Once an order has been dispatched, cancellation may no longer be possible.
Yes. Wholesale enquiries are welcome. Please contact us through our Contact Us page to discuss your requirements.
We aim to respond to customer enquiries within one business day.
Yes. Phone and WhatsApp support are available for customer enquiries where displayed on our Contact Us page.
Research Use Only: Unless explicitly stated otherwise, products sold by PhD Peptides are supplied strictly for laboratory and research purposes only. They are not intended for human consumption, medical use, veterinary use, diagnosis, treatment, or prevention of disease.