Certified Peptides FAQ
Short answers to the questions we get most about Certified Peptides: testing, ordering, storage and the products themselves.
Certified Peptides FAQ: testing and products
What is Certified Peptides?
Certified Peptides is a U.S. online store at certifiedpeptidesus.com selling 126 research products: peptides, peptide blends, capsules, lipotropic blends, raw powders and lab supplies.
Where are your products made?
In the USA. We only sell U.S.-made research products.
How do you test each batch?
An independent U.S. lab confirms identity by mass spectrometry, measures the content and checks purity by HPLC. Batches are also screened for endotoxins, heavy metals and sterility.
Can I see the certificate of analysis?
Yes. Most product pages show the report for the batch in stock in the photo gallery. For any other batch, email us the batch number from the label.
What purity do your peptides have?
Our standard is 99% or higher by HPLC.
What are GLP1-S, GLP2-T and GLP3-R?
They’re our catalog names for semaglutide, tirzepatide and retatrutide. Each product page names the compound in full.
What do I mix freeze-dried peptides with?
Sterile bacteriostatic water is the usual choice. A few peptides, such as IGF-1 LR3, dissolve better in dilute acetic acid. We sell both.
Certified Peptides FAQ: ordering and storage
How should I store peptides?
Keep sealed vials in the freezer for long storage or the fridge for a few weeks. Once mixed, keep the vial in the fridge and use it within about 28 days.
Do you sell capsules?
Yes. Our peptide capsules come in 60 or 100 count bottles, including BPC-157, KPV, GHK-Cu, MK-677 and SLU-PP-332.
Is everything in stock?
Yes. Every product listed in the shop is in stock.
Are your products for human use?
No. Everything we sell is for laboratory research only and isn’t approved for human or veterinary use.
Do you give dosing advice?
No. Our pages describe the compound, the published research, storage and reconstitution. We don’t give dosing or medical advice.
How do I contact Certified Peptides?
Email sales@certifiedpeptidesus.com. Include your order number if you have one.
Do you have products on sale?
Yes. 41 products are on sale right now, listed on our peptides on sale page.
Certified Peptides FAQ: choosing a product
If you’re unsure where to start, pick the research area first. The GLP-1 peptides, healing and recovery peptides and growth hormone peptides pages each explain how their compounds differ. Then compare sizes on the product page, where every strength is listed with its price per milligram.
Still have a question?
Contact Certified Peptides by email, or read more on our lab testing page and the blog. For the published research on any compound, each product page links to a PubMed search.
Popular products: GLP3-R 30mg, BPC-157 10mg, TB-500 10mg, GHK-Cu 100mg, NAD+ 500mg and KPV 10mg.
Certified Peptides products are sold for laboratory research use only. They aren’t for human or veterinary use and haven’t been evaluated by the FDA.