Peptides Source peptides: prices, COAs and vendor facts
Peptides Source is a research-peptide vendor that lists 98 injectable peptides, including 5-Amino-1MQ, Tirzepatide and NAD+. Across 97 products with a market median, its prices sit 6% below the median for the same peptide and vial size; it is the cheapest vendor we track on 5-Amino-1MQ and Semaglutide, and pricier on GHK-Cu and Retatrutide. We found no certificates for the in-stock products we track. Based on the certificates our crawler found; vendors may publish more than we index. 93 listings are labelled made in USA.
What the record shows
COA coverage: None found
We found no certificates for the in-stock products we track. Based on the certificates our crawler found; vendors may publish more than we index.
- Current certificates
- 0
- Tested within a year
- 0
- Labs named
- 0
- Freshest test date
- None printed
from 0 indexed documents
current certificates, by the date printed on them
named on 0 certificates
across current certificates
Price position
- 5-Amino-1MQ▼ 50%
- 5-Amino-1MQ▼ 49%
- Semaglutide▼ 45%
- GHK-Cu▲ 45%
- Retatrutide▲ 44%
- Retatrutide▲ 42%
Recent price changes
2 of Peptides Source’s tracked listings changed price in the last 30 days: 2 down, 0 up.
Price check
Listed prices at Peptides Source against the median price per mg for the same peptide at the same vial size, across every vendor we track. Vendors change prices without notice, so check the current listing before you order.
Below the market median on 25 of 43 comparable listings, above it on 13. Typical listing: 5% below market. Showing the 6 largest differences.
How does Peptides Source compare to other peptide vendors?
Peptides Source
International
6% below
vs market median
46
peptides
None found
in-stock products
Oct 5
Tetrava Labs
International
14% above
vs market median
52
peptides
None found
in-stock products
Oct 6
Peptides Greyhouse
International
7% above
vs market median
63
peptides
None found
in-stock products
Oct 6
Nationwide Peptides
International
3% above
vs market median
52
peptides
Partial
in-stock products
Oct 6
Peptides Source sits 6% below market the tracked market median on matched peptide/size rows. The catalog in this index is smaller than Tetrava Labs's. On COA coverage, Peptides Source rates none found and Tetrava Labs rates none found. Based on the certificates our crawler found; vendors may publish more than we index.
The honest comparison unit is price per mg on matched peptide/size rows. COA coverage is presence of a current indexed document, not purity-as-quality. See the Evidence Atlas and how to read a COA.
Evidence boundary: Listed prices, stock signals, and indexed COA documents are observations. They do not establish legitimacy, authenticity, safety, sterility, chain of custody, product quality, fulfillment, or suitability. No vendor is endorsed.
Popular peptides
21 of 22 carriedFull catalog (46)
Questions about Peptides Source
Is Peptides Source legit?
Pricing data cannot settle that question, and we do not test products or verify fulfillment. Here is the evidence we do hold for Peptides Source. We found no certificates for the in-stock products we track. Based on the certificates our crawler found; vendors may publish more than we index. Read each certificate yourself, check that its lot and compound match what you are buying, and treat anything we have not recorded as unknown rather than as an answer.
Does Peptides Source publish COAs?
We found no certificates for the in-stock products we track. Based on the certificates our crawler found; vendors may publish more than we index. We have not recorded a testing or COA page on their site. A certificate on file records what a document says; it cannot prove chain of custody or what is in the vial you receive.
How do Peptides Source prices compare to other vendors?
Across 97 graded products, Peptides Source's median price per mg sits 6.4% below the median for the same peptide at the same vial size. We track 46 products from them in total. Price per mg is the comparison unit: a cheaper vial holding less is not a cheaper product.
Product documentation
Peptides Source COA coverage
Across the tracked peptide products we hold for Peptides Source, COA coverage rates none found. The public index contains 0 documents. That rating covers the full tracked catalogue for Peptides Source, including products that are currently out of stock, so it can differ from the in-stock rating above. Based on the certificates our crawler found; vendors may publish more than we index.
- Product coverage
- None found
- Tested in past year
- 0
- Older records
- 0
- Most named lab
- Not reported
across the full tracked catalogue
current certificates, by the printed test date.
Printed date is over 18 months old.
No current record names a lab.
No current certificates are on file for the tracked market listings on this page.
A record appears on file after our pipeline identifies the document as a certificate of analysis and matches its printed compound to a catalog peptide. The record cannot prove authenticity, chain of custody, sterility, product safety, or suitability for use.
These are counts of documents in our index, and a coverage rating of what our crawler found. They do not grade vendor quality, legitimacy, or safety. Printed fields can contain transcription errors. “Older record” means the reported test date is more than 18 months old.
See the testing methodology and dataset, or compare this coverage against another vendor in the vendor comparison tool.
Cite this profile
The Peptide App. Peptides Source peptide prices, COA coverage and vendor facts. Updated October 5, 2026. https://www.thepeptide.app/pricing/vendor/peptides-source
The Peptide App. (2026). Peptides Source peptide prices, COA coverage and vendor facts. Retrieved from https://www.thepeptide.app/pricing/vendor/peptides-source
Prices and certificate counts on this page were last refreshed October 5, 2026.