Prime Peptides is a US research-peptide vendor based in Santa Barbara, CA that lists 22 injectable peptides, including Semax, TB-500 and Melanotan II. Across 22 products with a market median, its prices sit 20% above the median for the same peptide and vial size; it sits above the market on Semaglutide and Tirzepatide. We found certificates for around some of the in-stock products we track. Based on the certificates our crawler found; vendors may publish more than we index. Shipping is free over $150 and quoted at 2 days.
Facts extracted from the vendor’s site and not yet reviewed by us.
COA coverage: Partial
We found certificates for around some of the in-stock products we track. Based on the certificates our crawler found; vendors may publish more than we index.
from 19 indexed documents
current certificates, by the date printed on them
Freedom Diagnostics signs the most of them
oldest Apr 24, 2026
The site names Janoshik Analytical as its testing lab. These are the vendor’s own flags, not our measurements.
Prime Peptides states all products undergo rigorous third-party mass spectrometry testing by Janoshik Analytical, with batch-specific Certificates of Analysis showing purity between 99.17% and 99.94%.
$6/mg median
▼ 4%
Median price per mg across Prime Peptides’s 19-23 priced listings, from Jul 18 ($6.25/mg) to Oct 15 ($6/mg) over 86 observed days. The mix of products behind the median changes as listings come and go, so this tracks the catalog as well as the prices.
1 of Prime Peptides’s tracked listings changed price in the last 30 days: 1 down, 0 up.
Listed prices at Prime Peptides 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 0 of 16 comparable listings, above it on 15. Typical listing: 11% above market. Showing the 6 largest differences.
International
20% above
vs market median
16
peptides
Partial
in-stock products
Oct 15
International
3% above
vs market median
52
peptides
Partial
in-stock products
Oct 15
International
4% below
vs market median
46
peptides
None found
in-stock products
Oct 12
International
57% above
vs market median
46
peptides
None found
in-stock products
Oct 15
Prime Peptides sits 20% above market the tracked market median on matched peptide/size rows. The catalog in this index is smaller than Nationwide Peptides's. On COA coverage, Prime Peptides rates partial and Nationwide Peptides rates partial. 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.
Pricing data cannot settle that question, and we do not test products or verify fulfillment. Here is the evidence we do hold for Prime Peptides. We found certificates for around some of the in-stock products we track. Those certificates were signed by 4 labs, the newest tested October 6, 2026. Based on the certificates our crawler found; vendors may publish more than we index. We have been recording their prices since June 24, 2026. 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.
We found certificates for around some of the in-stock products we track. The freshest was tested October 6, 2026. 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.
Prime Peptides states that orders ship from California, USA. They state that they do not ship internationally. This is what the vendor says about itself, not something we have verified.
We have not recorded a shipping cost for Prime Peptides. Orders over $150 are listed as shipping free. Stated delivery is 2–2 days. Their shipping page is at https://primepeptides.co. Checkout is the only place these figures are binding.
We have none on record for Prime Peptides. When a code we can verify appears, it shows on this page and the prices here are adjusted for it; until then, every figure on this page is the list price.
Across 22 graded products, Prime Peptides's median price per mg sits 20.2% above the median for the same peptide at the same vial size. We track 16 products from them in total. Price per mg is the comparison unit: a cheaper vial holding less is not a cheaper product.
Product documentation
Across the tracked peptide products we hold for Prime Peptides, COA coverage rates partial. The public index contains 19 documents. Reported test dates in this set run from Apr 24, 2026 through Oct 6, 2026. That rating covers the full tracked catalogue for Prime Peptides, 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.
across the full tracked catalogue
current certificates, by the printed test date.
Printed date is over 18 months old.
Named on more current records than any other lab.
Certificate assessment
10 evaluated certificates
10 graded · 0 not graded · 10 in the A range.
The sample prioritizes up to ten popular peptides from this vendor. Grades assess the document and its reported tests, not the vendor’s whole catalog or the safety of a product.
Automated checks can make mistakes. Open “Why this result?” for the reason and any review notice, and check the linked COA’s lot against your product. How grading works
10 evaluated records
Document grade
B2: Identity, purity and amount are supported, and the lab's own records match this certificate.
Document check: flag.
Lab record: matched.
Graded Oct 14, 2026 · Grader 0.4.9 · Policy 2026-10-07.2
26093003
Document grade
B2: Identity, purity and amount are supported, and the lab's own records match this certificate.
Document check: flag.
Lab record: matched.
Graded Oct 14, 2026 · Grader 0.4.9 · Policy 2026-10-07.2
26091205
Document grade
B3: Most of the evidence is there, but identity isn't confirmed, so the grade stops at A-.
Document check: flag.
Lab record: matched.
Graded Oct 14, 2026 · Grader 0.4.9 · Policy 2026-10-07.2
26091202
Document grade
B2: Identity, purity and amount are supported, and the lab's own records match this certificate.
Document check: flag.
Lab record: matched.
Graded Oct 14, 2026 · Grader 0.4.9 · Policy 2026-10-07.2
26090303
Document grade
C3: We couldn't confirm this certificate against the lab's own records, so the grade stops at A-.
Document check: flag.
Lab record: not confirmed.
Graded Oct 14, 2026 · Grader 0.4.9 · Policy 2026-10-07.2
DPS-25 860061
Document grade
B2: Identity, purity and amount are supported, and the lab's own records match this certificate.
Document check: flag.
Lab record: matched.
Graded Oct 14, 2026 · Grader 0.4.9 · Policy 2026-10-07.2
26082901
Document grade
Review required
B3: Most of the evidence is there, but printed identity identifiers need review, so the grade stops at A-.
Document check: flag.
Lab record: not confirmed.
Graded Oct 14, 2026 · Grader 0.4.9 · Policy 2026-10-07.2
6132026GK
Document grade
B2: Identity, purity and amount are supported, and the lab's own records match this certificate.
Document check: flag.
Lab record: matched.
Graded Oct 14, 2026 · Grader 0.4.9 · Policy 2026-10-07.2
Document grade
C3: We couldn't confirm this certificate against the lab's own records, so the grade stops at A-.
Document check: flag.
Lab record: not confirmed.
Graded Oct 14, 2026 · Grader 0.4.9 · Policy 2026-10-07.2
3152026GLU
Document grade
Review required
B3: Most of the evidence is there, but printed identity identifiers need review, so the grade stops at A-.
Document check: flag.
Lab record: not confirmed.
Graded Oct 14, 2026 · Grader 0.4.9 · Policy 2026-10-07.2
3162026IPA
| COA grade | Printed lab | Certificate | |||
|---|---|---|---|---|---|
| Retatrutide Lot: 26093003 | Document grade Why this result?B2: Identity, purity and amount are supported, and the lab's own records match this certificate. Document check: flag. Lab record: matched. Graded Oct 14, 2026 · Grader 0.4.9 · Policy 2026-10-07.2 | Freedom Diagnostics | Oct 6, 2026 | 99.82%99.5%+ | View COA |
| Tesamorelin Lot: 26091205 | Document grade Why this result?B2: Identity, purity and amount are supported, and the lab's own records match this certificate. Document check: flag. Lab record: matched. Graded Oct 14, 2026 · Grader 0.4.9 · Policy 2026-10-07.2 | Freedom Diagnostics | Sep 27, 2026 | 99.4%99.0–99.49% | View COA |
| Semaglutide Lot: 26091202 | Document grade Why this result?B3: Most of the evidence is there, but identity isn't confirmed, so the grade stops at A-. Document check: flag. Lab record: matched. Graded Oct 14, 2026 · Grader 0.4.9 · Policy 2026-10-07.2 | Freedom Diagnostics | Sep 18, 2026 | 99.7%99.5%+ | View COA |
| MOTS-c Lot: 26090303 | Document grade Why this result?B2: Identity, purity and amount are supported, and the lab's own records match this certificate. Document check: flag. Lab record: matched. Graded Oct 14, 2026 · Grader 0.4.9 · Policy 2026-10-07.2 | Freedom Diagnostics | Sep 13, 2026 | 99.12%99.0–99.49% | View COA |
| NAD+ Lot: DPS-25 860061 | Document grade Why this result?C3: We couldn't confirm this certificate against the lab's own records, so the grade stops at A-. Document check: flag. Lab record: not confirmed. Graded Oct 14, 2026 · Grader 0.4.9 · Policy 2026-10-07.2 | Horizon Analytical | Sep 9, 2026 | 99.98%99.5%+ | View COA |
| BPC-157 Lot: 26082901 | Document grade Why this result?B2: Identity, purity and amount are supported, and the lab's own records match this certificate. Document check: flag. Lab record: matched. Graded Oct 14, 2026 · Grader 0.4.9 · Policy 2026-10-07.2 | Freedom Diagnostics | Sep 3, 2026 | 99.63%99.5%+ | View COA |
| GHK-Cu Lot: 6132026GK | Document grade Review required Why this result?B3: Most of the evidence is there, but printed identity identifiers need review, so the grade stops at A-. Document check: flag. Lab record: not confirmed. Graded Oct 14, 2026 · Grader 0.4.9 · Policy 2026-10-07.2 | KOVERA LABS | Jul 16, 2026 | 99.782%99.5%+ | View COA |
| Tirzepatide Lot: Not reported | Document grade Why this result?B2: Identity, purity and amount are supported, and the lab's own records match this certificate. Document check: flag. Lab record: matched. Graded Oct 14, 2026 · Grader 0.4.9 · Policy 2026-10-07.2 | Freedom Diagnostics | Jul 15, 2026 | 99.97%99.5%+ | View COA |
| Glutathione Lot: 3152026GLU | Document grade Why this result?C3: We couldn't confirm this certificate against the lab's own records, so the grade stops at A-. Document check: flag. Lab record: not confirmed. Graded Oct 14, 2026 · Grader 0.4.9 · Policy 2026-10-07.2 | Bioviridian | Apr 24, 2026 | 99.8%99.5%+ | View COA |
| Ipamorelin Lot: 3162026IPA | Document grade Review required Why this result?B3: Most of the evidence is there, but printed identity identifiers need review, so the grade stops at A-. Document check: flag. Lab record: not confirmed. Graded Oct 14, 2026 · Grader 0.4.9 · Policy 2026-10-07.2 | Bioviridian Inc. | Apr 24, 2026 | 99.8%99.5%+ | View COA |
10 current records
26093003
26091205
26091202
26090303
DPS-25 860061
26082901
6132026GK
3152026GLU
3162026IPA
| Printed lab | Certificate | |||
|---|---|---|---|---|
| Retatrutide | Freedom Diagnostics | Oct 6, 2026 | 99.82%99.5%+ | View COA |
| Tesamorelin | Freedom Diagnostics | Sep 27, 2026 | 99.4%99.0–99.49% | View COA |
| Semaglutide | Freedom Diagnostics | Sep 18, 2026 | 99.7%99.5%+ | View COA |
| MOTS-c | Freedom Diagnostics | Sep 13, 2026 | 99.12%99.0–99.49% | View COA |
| NAD+ | Horizon Analytical | Sep 9, 2026 | 99.98%99.5%+ | View COA |
| BPC-157 | Freedom Diagnostics | Sep 3, 2026 | 99.63%99.5%+ | View COA |
| GHK-Cu | KOVERA LABS | Jul 16, 2026 | 99.782%99.5%+ | View COA |
| Tirzepatide | Freedom Diagnostics | Jul 15, 2026 | 99.97%99.5%+ | View COA |
| Glutathione | Bioviridian | Apr 24, 2026 | 99.8%99.5%+ | View COA |
| Ipamorelin | Bioviridian Inc. | Apr 24, 2026 | 99.8%99.5%+ | View COA |
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.
The Peptide App. Prime Peptides peptide prices, COA coverage and vendor facts. Updated October 15, 2026. https://www.thepeptide.app/pricing/vendor/prime-peptides
The Peptide App. (2026). Prime Peptides peptide prices, COA coverage and vendor facts. Retrieved from https://www.thepeptide.app/pricing/vendor/prime-peptides
Prices and certificate counts on this page were last refreshed October 15, 2026.
