Peptide Supply Co is a US research-peptide vendor that lists 60 injectable peptides, 11 blends and 1 capsule, including Tirzepatide, Retatrutide and NAD+. Across 58 products with a market median, its prices sit 21% below the median for the same peptide and vial size; it is the cheapest vendor we track on Tirzepatide, and pricier on Dihexa. 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. Shipping is free and quoted at 2 days.
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 57 indexed documents
current certificates, by the date printed on them
Freedom Diagnostics signs the most of them
oldest Mar 26, 2026
Peptide Supply Co states every batch is independently tested by third-party laboratories with 99%+ purity verified.
$3.50/mg median
Unchanged
Median price per mg across Peptide Supply Co’s 55-69 priced listings, from Jul 17 ($3.50/mg) to Oct 14 ($3.50/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.
Listed prices at Peptide Supply Co 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 41 of 43 comparable listings, above it on 1. Typical listing: 17% below market. Showing the 6 largest differences.
International
21% below
vs market median
48
peptides
Broad
in-stock products
Oct 14
International
8% above
vs market median
63
peptides
None found
in-stock products
Oct 14
International
At median
vs market median
60
peptides
Limited
in-stock products
Oct 12
International
5% above
vs market median
56
peptides
Limited
in-stock products
Oct 14
Peptide Supply Co sits 21% below market the tracked market median on matched peptide/size rows. The catalog in this index is smaller than Peptides Greyhouse's. On COA coverage, Peptide Supply Co rates broad and Peptides Greyhouse 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 Peptide Supply Co. We found certificates for most of the in-stock products we track. Those certificates were signed by 1 lab, the newest tested September 11, 2026. Based on the certificates our crawler found; vendors may publish more than we index. We have been recording their prices since July 5, 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 September 11, 2026. Based on the certificates our crawler found; vendors may publish more than we index. Their own testing page is at https://www.peptidesupplyco.com/lab-results. A certificate on file records what a document says; it cannot prove chain of custody or what is in the vial you receive.
Peptide Supply Co states that orders ship from US. This is what the vendor says about itself, not something we have verified.
Peptide Supply Co lists shipping at $0. Orders over $0 are listed as shipping free. Stated delivery is 2–2 days. Checkout is the only place these figures are binding.
We have none on record for Peptide Supply Co. 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 58 graded products, Peptide Supply Co's median price per mg sits 20.5% below the median for the same peptide at the same vial size. We track 55 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 Peptide Supply Co, COA coverage rates broad. The public index contains 57 documents. Reported test dates in this set run from Mar 26, 2026 through Sep 11, 2026. That rating covers the full tracked catalogue for Peptide Supply Co, 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
9 graded · 1 not graded · 9 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
P1008242026
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
KPV1008052026
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
TSM1008520206
Not graded
This checker currently grades injectable peptides. Capsules, sprays and topicals need different safety tests, which we don't grade yet.
Lab record: not confirmed.
Graded Oct 14, 2026 · Grader 0.4.9 · Policy 2026-10-07.2
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
GCU5007072026
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
TB1007072026
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
MC1006222026
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
RT1006222026
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
SK1006222026
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
SX10 06032026
| COA grade | Printed lab | Certificate | |||
|---|---|---|---|---|---|
| Ipamorelin Lot: P1008242026 | 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 | Aug 29, 2026 | 99.23%99.0–99.49% | View COA |
| KPV Lot: KPV1008052026 | 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 | Aug 11, 2026 | 99.73%99.5%+ | View COA |
| Tesamorelin Lot: TSM1008520206 | 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 | Aug 11, 2026 | 99.23%99.0–99.49% | View COA |
| BPC-157 Lot: Not reported | Not graded Why this result?This checker currently grades injectable peptides. Capsules, sprays and topicals need different safety tests, which we don't grade yet. Lab record: not confirmed. Graded Oct 14, 2026 · Grader 0.4.9 · Policy 2026-10-07.2 | Freedom Diagnostics | Jul 16, 2026 | No purity printed | View COA |
| GHK-Cu Lot: GCU5007072026 | 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 11, 2026 | 99.86%99.5%+ | View COA |
| TB-500 Lot: TB1007072026 | 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 11, 2026 | 99.21%99.0–99.49% | View COA |
| MOTS-c Lot: MC1006222026 | 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 | Jun 26, 2026 | 99.17%99.0–99.49% | View COA |
| Retatrutide Lot: RT1006222026 | 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 Testing | Jun 26, 2026 | 99.94%99.5%+ | View COA |
| Selank Lot: SK1006222026 | 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 | Jun 26, 2026 | 99.69%99.5%+ | View COA |
| Semax Lot: SX10 06032026 | 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 | Jun 8, 2026 | 99.68%99.5%+ | View COA |
42 current records
ADX100825/2026
ARA10092026
PNC09302026
SM1009302026
SLU332500032026
P1008242026
VE2008242026
P2808132026
TN1008132026
IG10082026
KPV1008052026
TSM1008520206
5AM1007222026
DSIP1007220206
GTT1507220026
NAD507220206
DX1007092026
GCU5007072026
P411007072026
TB1007072026
LAX2006222026
MC1006222026
RT1006222026
SK1006222026
TA1006222026
VIP1006222026
AOD10 06032026
CGL10 06032026
CG20-06032026
ET50-06032026
KS10-06032026
LN20-06032026
OX10-06032026
PX20-06032026
SX10 06032026
TN20-06032026
VN20-06032026
TES50005132026
CD503232026
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. Peptide Supply Co peptide prices, COA coverage and vendor facts. Updated October 14, 2026. https://www.thepeptide.app/pricing/vendor/peptide-supply-co
The Peptide App. (2026). Peptide Supply Co peptide prices, COA coverage and vendor facts. Retrieved from https://www.thepeptide.app/pricing/vendor/peptide-supply-co
Prices and certificate counts on this page were last refreshed October 14, 2026.
