Is Penguin Peptides legit? Real store, testing gaps
Penguin Peptides is a real, operating store with gaps in its testing evidence: it scores 74/100 (grade B) on our published COA and testing method.
Our verdict on Penguin Peptides
Real store, testing gaps
74/100B
#3 of 11 ranked vendors
- Publishes COAs; lot matching unconfirmed
- Named lab: Northline Analytical (Denver, CO)
- 56% of 9 independent tests passed
Last verified How we scoreFull review
COA library audit
- Publishes COAs
- Yes · open COA libraryVerified· Oct 21, 2026Lab results
- Lot-matched
- Unknown
COA images were behind a bot check.
Unverified· Oct 21, 2026Lab results - Testing labs
- Northline Analytical (Denver, CO)
Named for one batch released Mar 12, 2026.
Verified· Oct 21, 2026Batch page - Methods shown
- None shown
Couldn't read the COA images.
Unverified· Oct 21, 2026Lab results - Independent tests
- Finnrick: 5 of 9 classifiable tests passed, all on GLP-1 compounds (rating 73%, #255 of 482); Finnrick notes "missing batch identifiers on every record". Latest test Aug 6, 2026.Verified· Oct 21, 2026Finnrick
What to know before buying
Sells bacteriostatic water
The FDA cited bacteriostatic water sold alongside peptides as human-use evidence in all five August 2026 warning letters to other sellers.
Verified· Oct 21, 2026Store
Policies and company
- Catalog access
- public
Pages show a bot check to scripts; prices come from the store's public product feed.
Verified· Oct 21, 2026Public store feed - GLP-1 compounds
- ListedVerified· Oct 21, 2026Store feed
- Shipping
- US only; 1-3 business days to process; adult signature over $700. Rates not published on the policy page.Verified· Oct 21, 2026Shipping policy
- Payment
- Not found. Unverified
- Returns
- All sales final; returns only for verified manufacturing defects. Damage reported within 48 hours.Verified· Oct 21, 2026Refund policy
- Company
- Penguin Peptides LLC (Wyoming)Verified· Oct 21, 2026Site
Price snapshot
| Compound | Vial | Price | Per mg | Links |
|---|---|---|---|---|
| BPC-157 | 5 mg | $42 | $8.40 | compare |
| BPC-157 | 10 mg | $62 | $6.20 | compare |
| GHK-Cu | 50 mg | $54 | $1.08 | compare |
| GHK-Cu | 100 mg | $74 | $0.74 | compare |
| MOTS-c | 10 mg | $65 | $6.50 | compare |
| MOTS-c | 20 mg | $110 | $5.50 | compare |
| MOTS-c | 40 mg | $197 | $4.92 | compare |
| NAD+ | 100 mg | $30 | $0.30 | compare |
| NAD+ | 500 mg | $65 | $0.13 | compare |
| NAD+ | 1 g | $119 | $0.12 | compare |
| TB-500 | 2 mg | $30 | $15.00 | compare |
| TB-500 | 5 mg | $42 | $8.40 | compare |
| TB-500 | 10 mg | $70 | $7.00 | compare |
What we did not do
- We haven't bought from this vendor or sent its vials to a lab ourselves yet. Our blind tests will appear in Lab Reports.
- We didn't place an order, so shipping speed and packaging are the vendor's stated policy, not our experience.
- We didn't verify COA report numbers with each lab unless the fact says so.
Alternatives on the same method
Ranked strictly by score. DRYPtides is the vendor we plan to partner with and appears only where its score puts it.
Questions
Is Penguin Peptides legit?
Penguin Peptides is a real, operating store with gaps in its testing evidence: it scores 74/100 (grade B) on our published COA and testing method.
Does Penguin Peptides publish lot-matched COAs?
Publishes COAs; lot matching unconfirmed. A lot-matched COA carries the same lot number as your vial; without it, a test of another batch says little about yours.
Has Penguin Peptides had FDA trouble?
We found no FDA warning letter or regulator action naming Penguin Peptides as of 2026-10-21.
What are the best Penguin Peptides alternatives?
On the same method: Core Peptides (83), True Peptides (75), Ascension Peptides (70).
Is there a Penguin Peptides coupon code?
We have no verified percentage code for Penguin Peptides; our coupon page lists what we could source.