- Reported purity
- 99.6%99.5%+
- Test date
- Sep 21, 2025
- Laboratory named
- Peptide Works
Lot details
20250201022
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Peptide Works peptides: prices, COAs and vendor facts
92 tracked listings · 55 productsVisit site
Peptide Works is a research-peptide vendor that lists 82 injectable peptides, including Epitalon, PT-141 and Melanotan II. Across 74 products with a market median, its prices sit 16% below the median for the same peptide and vial size; it is the cheapest vendor we track on Oxytocin and Glutathione, and pricier on SS-31 and NAD+. 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. It accepts card, Zelle, wire and crypto.
Peptide Works at a glance
- International shipping
- Offeredsource
- Payment accepted
- Card, Zelle, Wire, Cryptosource
- Storefront
- woocommercesource
- First tracked here
- August 2026
Facts extracted from the vendor’s site and not yet reviewed by us.
What the record shows
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.
- Current certificates
- 52
- Tested within a year
- 0
- Labs named
- 1
- Freshest test date
- Sep 21, 2025
from 56 indexed documents
current certificates, by the date printed on them
Peptide Works signs the most of them
oldest Jun 22, 2022
Peptide Works states it provides Certificates of Analysis including test results, purity levels, and batch details, using HPLC and mass spectrometry with independent lab verification.
Price position
Popular
9% below market
on 20 popular peptides
Catalog
16% below market
$ price level · 92 listings
Peptides
55
20 popular carried
COA coverage, in stock
Broad
Based on the certificates our crawler found; vendors may publish more than we index.
Cheapest on
- Oxytocin▼ 71%
- Glutathione▼ 63%
- Epitalon▼ 58%
Pricier on
- SS-31▲ 129%
- SS-31▲ 106%
- NAD+▲ 66%
Price history
$6.96/mg median
▼ 10%
Median price per mg across Peptide Works’s 82-89 priced listings, from Aug 18 ($7.77/mg) to Oct 2 ($6.96/mg) over 46 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.
Price check
Listed prices at Peptide Works 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.
SS-3150 mg vial · lowest elsewhere $1.38/mg at Peptides Exchange▲ 106%$6.96/mgOxytocin2 mg vial · lowest elsewhere $9.99/mg at Peptide Giants▼ 71%$5.11/mgGlutathione200 mg vial · lowest elsewhere $0.15/mg at Umbrella Labs▼ 63%$0.11/mgHumanin10 mg vial · lowest elsewhere $7/mg at Umbrella Labs▼ 53%$5.55/mgGonadorelin2 mg vial · lowest elsewhere $8.50/mg at Pure Health Peptides▼ 48%$7.50/mgTriptorelin2 mg vial · lowest elsewhere $14.98/mg at Swiss Chems▼ 46%$9.54/mg
Below the market median on 34 of 42 comparable listings, above it on 8. Typical listing: 25% below market. Showing the 6 largest differences.
How does Peptide Works compare to other peptide vendors?
Peptide Works
International
Price position
16% below
vs market median
Catalog
55
peptides
COA coverage
Broad
in-stock products
Last checked
Oct 2
Tetrava Labs
International
Price position
16% above
vs market median
Catalog
52
peptides
COA coverage
None found
in-stock products
Last checked
Oct 2
Peptides Greyhouse
International
Price position
7% above
vs market median
Catalog
63
peptides
COA coverage
None found
in-stock products
Last checked
Oct 2
Nationwide Peptides
International
Price position
3% above
vs market median
Catalog
52
peptides
COA coverage
Partial
in-stock products
Last checked
Oct 2
Peptide Works sits 16% below market the tracked market median on matched peptide/size rows. The catalog in this index is larger than Tetrava Labs's. On COA coverage, Peptide Works rates broad 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.
Peptide Works vs Tetrava LabsPeptide Works vs Peptides GreyhousePeptide Works vs Nationwide Peptides
Popular peptides
20 of 22 carriedFull catalog (55)
Questions about Peptide Works
Is Peptide Works legit?
Pricing data cannot settle that question, and we do not test products or verify fulfillment. Here is the evidence we do hold for Peptide Works. We found certificates for most of the in-stock products we track. Those certificates were signed by 1 lab, the newest tested September 21, 2025. Based on the certificates our crawler found; vendors may publish more than we index. We have been recording their prices since August 18, 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.
Does Peptide Works publish COAs?
We found certificates for most of the in-stock products we track. The freshest was tested September 21, 2025. 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.
Where does Peptide Works ship from?
We have not recorded where Peptide Works ships from. They state that they ship internationally. This is what the vendor says about itself, not something we have verified.
How much is shipping at Peptide Works?
We have not recorded a shipping cost for Peptide Works. Their shipping page is at https://peptide-works.com/shipping-and-returns-policy/. Checkout is the only place these figures are binding.
What payment methods does Peptide Works accept?
At the time we recorded it, Peptide Works listed credit or debit card, Zelle, wire transfer and cryptocurrency. Peptide storefronts change processors often, so the options at checkout may differ from what we hold.
Does Peptide Works have a coupon or discount code?
We have none on record for Peptide Works. 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.
How do Peptide Works prices compare to other vendors?
Across 74 graded products, Peptide Works's median price per mg sits 16.1% 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
Peptide Works COA coverage
Across the tracked peptide products we hold for Peptide Works, COA coverage rates broad. The public index contains 56 documents. Reported test dates in this set run from Jun 22, 2022 through Sep 21, 2025. That rating covers the full tracked catalogue for Peptide Works, 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
- Broad
- Tested in past year
- 0
- Older records
- 3
- Most named lab
- Peptide Works
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.
52 current records
View COA
BronchogenOlder record
- Reported purity
- 99.5%99.5%+
- Test date
- Jul 2, 2024
- Laboratory named
- Peptide Works
Lot details
P286702-LR102706
ARA-290Older record
- Reported purity
- 99.3%99.0–99.49%
- Test date
- Oct 15, 2023
- Laboratory named
- PEPTIDE WORKS
Lot details
20235101039
GonadorelinOlder record
- Reported purity
- 99.6%99.5%+
- Test date
- Jun 22, 2022
- Laboratory named
- Peptide Works
Lot details
2022062202
- Reported purity
- 99%99.0–99.49%
- Test date
- Not reported
- Laboratory named
- Peptide Works
Lot details
20200729/046
- Reported purity
- 99.52%99.5%+
- Test date
- Not reported
- Laboratory named
- PEPTIDE WORKS
Lot details
AX20230521-SP134
- Reported purity
- 98.5%Under 99%
- Test date
- Not reported
- Laboratory named
- PEPTIDE WORKS
Lot not reportedView COA
- Reported purity
- 98.5%Under 99%
- Test date
- Not reported
- Laboratory named
- Peptide Works
Lot not reportedView COA
- Reported purity
- 99.7%99.5%+
- Test date
- Not reported
- Laboratory named
- Peptide Works
Lot details
20260813047
- Reported purity
- 98.5%Under 99%
- Test date
- Not reported
- Laboratory named
- PEPTIDE WORKS
Lot not reportedView COA
- Reported purity
- 99.1%99.0–99.49%
- Test date
- Not reported
- Laboratory named
- Peptide Works
Lot details
20251007001
- Reported purity
- 99.6%99.5%+
- Test date
- Not reported
- Laboratory named
- PEPTIDE WORKS
Lot details
2026070603
- Reported purity
- No purity printed
- Test date
- Not reported
- Laboratory named
- PEPTIDE WORKS
Lot not reportedView COA
- Reported purity
- 98.7%Under 99%
- Test date
- Not reported
- Laboratory named
- Peptide Works
Lot details
20251008011
- Reported purity
- 99.5%99.5%+
- Test date
- Not reported
- Laboratory named
- Peptide Works
Lot details
202359916033
- Reported purity
- 98.7%Under 99%
- Test date
- Not reported
- Laboratory named
- Peptide Works
Lot details
20250910016
- Reported purity
- No purity printed
- Test date
- Not reported
- Laboratory named
- Peptide Works
Lot details
ALT2500915038-SF142
- Reported purity
- 98.3%Under 99%
- Test date
- Not reported
- Laboratory named
- Peptide Works
Lot details
PB2009-LR678968
- Reported purity
- 96%Under 99%
- Test date
- Not reported
- Laboratory named
- PEPTIDE WORKS
Lot details
A20230527-GDF8
- Reported purity
- 99.8%99.5%+
- Test date
- Not reported
- Laboratory named
- PEPTIDE WORKS
Lot details
20230912014
- Reported purity
- 99.6%99.5%+
- Test date
- Not reported
- Laboratory named
- Peptide Works
Lot details
20230911007
- Reported purity
- 99.7%99.5%+
- Test date
- Not reported
- Laboratory named
- Peptide Works
Lot not reportedView COA
- Reported purity
- 99.3%99.0–99.49%
- Test date
- Not reported
- Laboratory named
- PEPTIDE WORKS
Lot details
20200810345
- Reported purity
- 99.5%99.5%+
- Test date
- Not reported
- Laboratory named
- Peptide Works
Lot details
23205014019
- Reported purity
- 98.07%Under 99%
- Test date
- Not reported
- Laboratory named
- Peptide Works
Lot not reportedView COA
- Reported purity
- 97.3%Under 99%
- Test date
- Not reported
- Laboratory named
- PEPTIDE WORKS
Lot details
P250918033
- Reported purity
- 99.5%99.5%+
- Test date
- Not reported
- Laboratory named
- PEPTIDE WORKS
Lot details
20230911004
- Reported purity
- 99.5%99.5%+
- Test date
- Not reported
- Laboratory named
- Peptide Works
Lot details
20230910020
- Reported purity
- 99%99.0–99.49%
- Test date
- Not reported
- Laboratory named
- Peptide Works
Lot not reportedView COA
- Reported purity
- 98%Under 99%
- Test date
- Not reported
- Laboratory named
- Peptide Works
Lot details
P20250922034
- Reported purity
- 99.5%99.5%+
- Test date
- Not reported
- Laboratory named
- Peptide Works
Lot details
22352010123
- Reported purity
- 99.14%99.0–99.49%
- Test date
- Not reported
- Laboratory named
- Peptide Works
Lot details
20250622027
- Reported purity
- 98.87%Under 99%
- Test date
- Not reported
- Laboratory named
- PEPTIDE WORKS
Lot not reportedView COA
- Reported purity
- 99.4%99.0–99.49%
- Test date
- Not reported
- Laboratory named
- Peptide Works
Lot details
202205190225
- Reported purity
- 99.4%99.0–99.49%
- Test date
- Not reported
- Laboratory named
- Peptide Works
Lot not reportedView COA
- Reported purity
- 99.3%99.0–99.49%
- Test date
- Not reported
- Laboratory named
- PEPTIDE WORKS
Lot not reportedView COA
- Reported purity
- 98.1%Under 99%
- Test date
- Not reported
- Laboratory named
- Peptide Works
Lot not reportedView COA
- Reported purity
- 99.2%99.0–99.49%
- Test date
- Not reported
- Laboratory named
- PEPTIDE WORKS
Lot details
20220807039
- Reported purity
- 99.8%99.5%+
- Test date
- Not reported
- Laboratory named
- PEPTIDE WORKS
Lot details
20250924012
- Reported purity
- 99.5%99.5%+
- Test date
- Not reported
- Laboratory named
- Peptide Works
Lot details
202209280014
- Reported purity
- 98.5%Under 99%
- Test date
- Not reported
- Laboratory named
- Peptide Works
Lot details
20230921013
- Reported purity
- 99.3%99.0–99.49%
- Test date
- Not reported
- Laboratory named
- Peptide Works
Lot details
2920971620-2
- Reported purity
- 99.6%99.5%+
- Test date
- Not reported
- Laboratory named
- Peptide Works
Lot details
20230591038
- Reported purity
- 99.5%99.5%+
- Test date
- Not reported
- Laboratory named
- PEPTIDE WORKS
Lot details
202505050375
- Reported purity
- 99.5%99.5%+
- Test date
- Not reported
- Laboratory named
- Peptide Works
Lot not reportedView COA
- Reported purity
- 96.48%Under 99%
- Test date
- Not reported
- Laboratory named
- PEPTIDE WORKS
Lot details
20220802/045
- Reported purity
- 99%99.0–99.49%
- Test date
- Not reported
- Laboratory named
- PEPTIDE WORKS
Lot details
20235982046
- Reported purity
- 99.5%99.5%+
- Test date
- Not reported
- Laboratory named
- PEPTIDE WORKS
Lot details
20200519027
- Reported purity
- 99.2%99.0–99.49%
- Test date
- Not reported
- Laboratory named
- Peptide Works
Lot details
20251009003
- Reported purity
- 98.6%Under 99%
- Test date
- Not reported
- Laboratory named
- Peptide Works
Lot details
2010101047
- Reported purity
- 99.6%99.5%+
- Test date
- Not reported
- Laboratory named
- PEPTIDE WORKS
Lot details
26250101934
- Reported purity
- 98.2%Under 99%
- Test date
- Not reported
- Laboratory named
- Peptide Works
Lot details
P260711-3-LR062002
| Printed lab | Certificate | |||
|---|---|---|---|---|
| AOD-9604 | Peptide Works | Sep 21, 2025 | 99.6%99.5%+ | View COA |
| Bronchogen | Peptide Works | Jul 2, 2024Older record | 99.5%99.5%+ | View COA |
| ARA-290 | PEPTIDE WORKS | Oct 15, 2023Older record | 99.3%99.0–99.49% | View COA |
| Gonadorelin | Peptide Works | Jun 22, 2022Older record | 99.6%99.5%+ | View COA |
| 5-Amino-1MQ | Peptide Works | Not reported | 99%99.0–99.49% | View COA |
| ACE-031 | PEPTIDE WORKS | Not reported | 99.52%99.5%+ | View COA |
| Adamax | PEPTIDE WORKS | Not reported | 98.5%Under 99% | View COA |
| Adipotide | Peptide Works | Not reported | 98.5%Under 99% | View COA |
| AICAR | Peptide Works | Not reported | 99.7%99.5%+ | View COA |
| B7-33 | PEPTIDE WORKS | Not reported | 98.5%Under 99% | View COA |
| BPC-157 | Peptide Works | Not reported | 99.1%99.0–99.49% | View COA |
| Cartalax | PEPTIDE WORKS | Not reported | 99.6%99.5%+ | View COA |
| CJC-1295 (no DAC) | PEPTIDE WORKS | Not reported | No purity printed | View COA |
| CJC-1295 (with DAC) | Peptide Works | Not reported | 98.7%Under 99% | View COA |
| DSIP | Peptide Works | Not reported | 99.5%99.5%+ | View COA |
| Epitalon | Peptide Works | Not reported | 98.7%Under 99% | View COA |
| Follistatin | Peptide Works | Not reported | No purity printed | View COA |
| FOXO4-DRI | Peptide Works | Not reported | 98.3%Under 99% | View COA |
| GDF-8 (Myostatin) | PEPTIDE WORKS | Not reported | 96%Under 99% | View COA |
| GHK-Cu | PEPTIDE WORKS | Not reported | 99.8%99.5%+ | View COA |
| GHRP-2 | Peptide Works | Not reported | 99.6%99.5%+ | View COA |
| GHRP-6 | Peptide Works | Not reported | 99.7%99.5%+ | View COA |
| Glutathione | PEPTIDE WORKS | Not reported | 99.3%99.0–99.49% | View COA |
| Hexarelin | Peptide Works | Not reported | 99.5%99.5%+ | View COA |
| Humanin | Peptide Works | Not reported | 98.07%Under 99% | View COA |
| IGF-LR3 | PEPTIDE WORKS | Not reported | 97.3%Under 99% | View COA |
| Ipamorelin | PEPTIDE WORKS | Not reported | 99.5%99.5%+ | View COA |
| Kisspeptin-10 | Peptide Works | Not reported | 99.5%99.5%+ | View COA |
| KPV | Peptide Works | Not reported | 99%99.0–99.49% | View COA |
| LL-37 | Peptide Works | Not reported | 98%Under 99% | View COA |
| Melanotan II | Peptide Works | Not reported | 99.5%99.5%+ | View COA |
| MGF | Peptide Works | Not reported | 99.14%99.0–99.49% | View COA |
| MK-677 | PEPTIDE WORKS | Not reported | 98.87%Under 99% | View COA |
| MOTS-c | Peptide Works | Not reported | 99.4%99.0–99.49% | View COA |
| NAD+ | Peptide Works | Not reported | 99.4%99.0–99.49% | View COA |
| Orexin A and Orexin B | PEPTIDE WORKS | Not reported | 99.3%99.0–99.49% | View COA |
| Oxytocin | Peptide Works | Not reported | 98.1%Under 99% | View COA |
| P21 | PEPTIDE WORKS | Not reported | 99.2%99.0–99.49% | View COA |
| PT-141 | PEPTIDE WORKS | Not reported | 99.8%99.5%+ | View COA |
| Selank | Peptide Works | Not reported | 99.5%99.5%+ | View COA |
| Semax | Peptide Works | Not reported | 98.5%Under 99% | View COA |
| Sermorelin | Peptide Works | Not reported | 99.3%99.0–99.49% | View COA |
| SNAP-8 | Peptide Works | Not reported | 99.6%99.5%+ | View COA |
| SS-31 | PEPTIDE WORKS | Not reported | 99.5%99.5%+ | View COA |
| Tesamorelin | Peptide Works | Not reported | 99.5%99.5%+ | View COA |
| Tesofensine | PEPTIDE WORKS | Not reported | 96.48%Under 99% | View COA |
| Thymalin | PEPTIDE WORKS | Not reported | 99%99.0–99.49% | View COA |
| Thymosin Alpha-1 | PEPTIDE WORKS | Not reported | 99.5%99.5%+ | View COA |
| Thymosin Beta-4 | Peptide Works | Not reported | 99.2%99.0–99.49% | View COA |
| Triptorelin | Peptide Works | Not reported | 98.6%Under 99% | View COA |
| Vasoactive Intestinal Peptide (VIP) | PEPTIDE WORKS | Not reported | 99.6%99.5%+ | View COA |
| Vilon | Peptide Works | Not reported | 98.2%Under 99% | 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.
Cite this profile
The Peptide App. Peptide Works peptide prices, COA coverage and vendor facts. Updated October 2, 2026. https://www.thepeptide.app/pricing/vendor/peptide-works
The Peptide App. (2026). Peptide Works peptide prices, COA coverage and vendor facts. Retrieved from https://www.thepeptide.app/pricing/vendor/peptide-works
Prices and certificate counts on this page were last refreshed October 2, 2026.