Before you compare peptide prices
If you’re filling a prescription, start with the medicine and strength on your prescription. If you’re buying for a laboratory, start with the material your experiment requires. Each has different costs to check.
No peptide prices are published on RateMyLab yet.
You can use the questions below when reviewing a pharmacy or supplier’s quote.
Read about a specific peptide
What will your prescription actually cost?
For semaglutide, tirzepatide, or another prescribed medicine, ask for a quote for your exact product, strength, form, and package quantity. A price per vial or a “starting at” monthly price may not cover what you’ve been prescribed.
Compounded medicines are not FDA-approved. Don’t assume a compounded product is interchangeable with an approved medicine because the ingredient name matches. Read the FDA’s guidance on unapproved GLP-1 drugs.
- Does the quote include the medicine?
- Ask whether consultations, a membership, supplies, and shipping are included or billed separately.
- What will you pay for the next refill?
- Check the renewal price, billing interval, minimum commitment, and cancellation terms before paying for a subscription.
- Do you qualify for the advertised price?
- Check whether it is a cash price, an insurance copay, or a coupon price with eligibility restrictions.
- Which pharmacy will fill your prescription?
- Verify its state license and access to a pharmacist. A prescription should be required. Use the FDA’s online pharmacy checklist.
Buying peptides for laboratory research
Start with the sequence and modifications required by your protocol. Check the supplier’s product specification and the certificate of analysis for the batch you would receive before comparing the price per milligram.
Research products are not medicines for personal use. The FDA has warned about unapproved GLP-1 products sold to consumers under research labels. Read the FDA’s warning about research-labeled products.
- What does the listed weight measure?
- Check whether the quantity is gross powder weight or measured peptide content. Water and salts can contribute to the powder’s weight.
- How was purity measured?
- HPLC purity and peptide content measure different things. A purity percentage alone does not tell you the mass of peptide in a vial. See MilliporeSigma’s explanation of purity and content.
- Does the documentation match the batch?
- Request a certificate with the product identifier, lot number, identity testing, and analytical results. Check shipping, storage requirements, and any minimum order before calculating the total.
Sources checked September 13, 2026. This page explains how to read a quote; it does not recommend a medicine or a supplier.