peptidology is a US research-peptide vendor based in Scottsdale, AZ that lists 62 injectable peptides and 1 capsule, including FOXO4-DRI, KPV and Selank. Across 24 products with a market median, its prices sit 12% below the median for the same peptide and vial size; it is the cheapest vendor we track on LL-37 and BPC-157, and pricier on ACE-031 and Epitalon. We found certificates for most of the in-stock products we track. Based on the certificates our crawler found; vendors may publish more than we index.
Facts extracted from the vendor’s site and not yet reviewed by us.
COA coverage: Broad
We found certificates for most of the in-stock products we track. Based on the certificates our crawler found; vendors may publish more than we index.
from 211 indexed documents
current certificates, by the date printed on them
Vanguard Laboratory signs the most of them
oldest Jan 6, 2026
The site names Vanguard Laboratory, Eagle Analytical Services Inc. as its testing labs. These are the vendor’s own flags, not our measurements.
Peptidology says it publishes third-party lab reports for every new batch (citing 444 published reports, 15 tests per batch, 99.59% median purity across 251 lots, and 239/239 lots passing sterility) using ISO/IEC 17025-accredited U.S. labs.
$4.14/mg median
▼ 17%
Median price per mg across peptidology’s 46-62 priced listings, from Jul 28 ($5/mg) to Oct 14 ($4.14/mg) over 29 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.
27 of peptidology’s tracked listings changed price in the last 30 days: 22 down, 5 up. Showing the 8 most recent.
Listed prices at peptidology 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 13 of 16 comparable listings, above it on 3. Typical listing: 14% below market. Showing the 6 largest differences.
International
12% below
vs market median
47
peptides
Broad
in-stock products
Oct 14
International
At median
vs market median
61
peptides
None found
in-stock products
Oct 14
International
8% above
vs market median
63
peptides
None found
in-stock products
Oct 14
International
15% above
vs market median
65
peptides
None found
in-stock products
Oct 14
peptidology sits 12% below market the tracked market median on matched peptide/size rows. The catalog in this index is smaller than Luxe Peptides's. On COA coverage, peptidology rates broad and Luxe Peptides 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.
Pricing data cannot settle that question, and we do not test products or verify fulfillment. Here is the evidence we do hold for peptidology. We found certificates for most of the in-stock products we track. Those certificates were signed by 1 lab, the newest tested October 7, 2026. Based on the certificates our crawler found; vendors may publish more than we index. We have been recording their prices since July 3, 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 most of the in-stock products we track. The freshest was tested October 7, 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.
peptidology states that orders ship from Scottsdale, AZ. 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 peptidology. Their shipping page is at https://peptidology.co/pages/shipping-policy. Checkout is the only place these figures are binding.
We have none on record for peptidology. 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 24 graded products, peptidology's median price per mg sits 12.1% below the median for the same peptide at the same vial size. We track 47 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 peptidology, COA coverage rates broad. The public index contains 211 documents. Reported test dates in this set run from Jan 6, 2026 through Oct 7, 2026. That rating covers the full tracked catalogue for peptidology, 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
9 evaluated certificates
3 graded · 6 not graded · 2 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
9 evaluated records
Not graded
This looks like one part of a longer certificate (Page 1 of 3), so it can't be graded on its own. Upload the full certificate of analysis for this batch.
Lab record: not confirmed.
Graded Oct 14, 2026 · Grader 0.4.9 · Policy 2026-10-07.2
1782
Document grade
X2: The certificate's identity evidence (Identity HPLC-UV/VIS - Pass - Matches Ref. Standard) can't confirm the peptide on its own; that needs mass spectrometry or a side-by-side match to a reference standard.
Document check: fail.
Lab record: not confirmed.
Graded Oct 14, 2026 · Grader 0.4.9 · Policy 2026-10-07.2
1779
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
1767
Not graded
This looks like one part of a longer certificate (Page 1 of 3), so it can't be graded on its own. Upload the full certificate of analysis for this batch.
Lab record: not confirmed.
Graded Oct 14, 2026 · Grader 0.4.9 · Policy 2026-10-07.2
1775
Not graded
This looks like one part of a longer certificate (Page 1 of 3 (visible on page footer)), so it can't be graded on its own. Upload the full certificate of analysis for this batch.
Lab record: not confirmed.
Graded Oct 14, 2026 · Grader 0.4.9 · Policy 2026-10-07.2
1738
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
1727
Not graded
This looks like one part of a longer certificate (Page 1 of 3), so it can't be graded on its own. Upload the full certificate of analysis for this batch.
Lab record: not confirmed.
Graded Oct 14, 2026 · Grader 0.4.9 · Policy 2026-10-07.2
1709
Not graded
This looks like one part of a longer certificate (Page 1 of 3 (visible at bottom of page)), so it can't be graded on its own. Upload the full certificate of analysis for this batch.
Lab record: not confirmed.
Graded Oct 14, 2026 · Grader 0.4.9 · Policy 2026-10-07.2
1700
Not graded
This looks like one part of a longer certificate (Page 1 of 3 (printed on page footer)), so it can't be graded on its own. Upload the full certificate of analysis for this batch.
Lab record: not confirmed.
Graded Oct 14, 2026 · Grader 0.4.9 · Policy 2026-10-07.2
1674
| COA grade | Printed lab | Certificate | |||
|---|---|---|---|---|---|
| Tesamorelin Lot: 1782 | Not graded Why this result?This looks like one part of a longer certificate (Page 1 of 3), so it can't be graded on its own. Upload the full certificate of analysis for this batch. Lab record: not confirmed. Graded Oct 14, 2026 · Grader 0.4.9 · Policy 2026-10-07.2 | Vanguard Laboratory | Oct 7, 2026 | No purity printed | View COA |
| MOTS-c Lot: 1779 | Document grade Why this result?X2: The certificate's identity evidence (Identity HPLC-UV/VIS - Pass - Matches Ref. Standard) can't confirm the peptide on its own; that needs mass spectrometry or a side-by-side match to a reference standard. Document check: fail. Lab record: not confirmed. Graded Oct 14, 2026 · Grader 0.4.9 · Policy 2026-10-07.2 | Vanguard Laboratory | Sep 25, 2026 | 99.21%99.0–99.49% | View COA |
| GHK-Cu Lot: 1767 | 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 | Vanguard Laboratory | Sep 10, 2026 | No purity printed | View COA |
| TB-500 Lot: 1775 | Not graded Why this result?This looks like one part of a longer certificate (Page 1 of 3), so it can't be graded on its own. Upload the full certificate of analysis for this batch. Lab record: not confirmed. Graded Oct 14, 2026 · Grader 0.4.9 · Policy 2026-10-07.2 | Vanguard Laboratory | Sep 9, 2026 | No purity printed | View COA |
| Ipamorelin Lot: 1738 | Not graded Why this result?This looks like one part of a longer certificate (Page 1 of 3 (visible on page footer)), so it can't be graded on its own. Upload the full certificate of analysis for this batch. Lab record: not confirmed. Graded Oct 14, 2026 · Grader 0.4.9 · Policy 2026-10-07.2 | Vanguard Laboratory | Aug 16, 2026 | No purity printed | View COA |
| BPC-157 Lot: 1727 | 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 | Vanguard Laboratory | Aug 5, 2026 | No purity printed | View COA |
| CJC-1295 (no DAC) Lot: 1709 | Not graded Why this result?This looks like one part of a longer certificate (Page 1 of 3), so it can't be graded on its own. Upload the full certificate of analysis for this batch. Lab record: not confirmed. Graded Oct 14, 2026 · Grader 0.4.9 · Policy 2026-10-07.2 | Vanguard Laboratory | Jul 17, 2026 | 99.8%99.5%+ | View COA |
| Selank Lot: 1700 | Not graded Why this result?This looks like one part of a longer certificate (Page 1 of 3 (visible at bottom of page)), so it can't be graded on its own. Upload the full certificate of analysis for this batch. Lab record: not confirmed. Graded Oct 14, 2026 · Grader 0.4.9 · Policy 2026-10-07.2 | Vanguard Laboratory | Jun 23, 2026 | 99.8%99.5%+ | View COA |
| KPV Lot: 1674 | Not graded Why this result?This looks like one part of a longer certificate (Page 1 of 3 (printed on page footer)), so it can't be graded on its own. Upload the full certificate of analysis for this batch. Lab record: not confirmed. Graded Oct 14, 2026 · Grader 0.4.9 · Policy 2026-10-07.2 | Vanguard Laboratory | Jun 10, 2026 | 99.8%99.5%+ | View COA |
44 current records
1782
1778
1779
1767
1775
1766
1743
1737
1738
1739
1747
1745
1749
1746
1752
1748
1750
1733
1732
1727
1706
1709
1707
1710
1679
1697
1698
1699
1700
1674
1688
1677
1678
1672
1668
1671
1671
1671
1671
1671
1671
1671
1670
1668
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. peptidology peptide prices, COA coverage and vendor facts. Updated October 14, 2026. https://www.thepeptide.app/pricing/vendor/peptidology
The Peptide App. (2026). peptidology peptide prices, COA coverage and vendor facts. Retrieved from https://www.thepeptide.app/pricing/vendor/peptidology
Prices and certificate counts on this page were last refreshed October 14, 2026.
