Ranked 20 of 20
Penguin Peptides
Budget vendor with public certificates that are not tied to specific lots. Independent results have been inconsistent.
Overall score
58.6
Mixed. Board median 77.8.
Score breakdown
-
Purity
40% weight53.5
3 of 7 samples passed
-
Trust
25% weight43
2 of 7 checks earned in full
-
Delivery
20% weight64
5 business day median
-
Value
15% weight91
0.79x the market median per mg
Transparency checks
Each check is worth a fixed number of points. Together they make up the trust score of 43.
- Certificates readable before checkout 20 / 20
- Lot on certificate matches the vial 0 / 20
- Testing lab named 0 / 12
- Certificate verifies at the lab 0 / 13
- Mass spec identity confirmation 0 / 10
- Trading history (4 years) 8 / 10
- No public enforcement actions 15 / 15
Facts
- Headquarters
- Not disclosed
- Ships from
- United States
- Trading since
- 2022
- Payments
- Cards, Crypto
- Delivery
- 5 business day median
- Carriers
- USPS
- Testing labs
- Not named on certificates
- Public reviews
- 4.2 average across 380 reviews
What stands out
- Lowest prices on several recovery peptides
- Card payments accepted
Where it falls short
- Certificates are not lot-matched
- Lab is not named
- Independent pass rate below the board average
Product by product
Rank is this vendor’s position among all vendors tested on that compound. Price is the listed vial normalised to dollars per milligram.
| Product | Rank | Avg purity | Tests | Price | Pass score |
|---|---|---|---|---|---|
| BPC-157 Latest Oct 19, 2026 | 20 | 99.00% | 0 / 1 | $5.60/mg $28 / 5 mg | 35.3 |
| CJC-1295 (no DAC) Latest Jan 29, 2026 | 5 | 98.20% | 0 / 1 | $6.40/mg $32 / 5 mg | 49.2 |
| GHK-Cu Latest May 1, 2026 | 8 | 99.62% | 1 / 1 | $0.48/mg $24 / 50 mg | 97.6 |
| Ipamorelin Latest Mar 10, 2026 | 10 | 99.10% | 0 / 1 | $4.80/mg $24 / 5 mg | 56.5 |
| PT-141 Latest Dec 8, 2025 | 8 | 99.60% | 1 / 1 | $3.40/mg $34 / 10 mg | 100.0 |
| Semaglutide Latest Jun 17, 2026 | 15 | 98.60% | 0 / 1 | $8.20/mg $41 / 5 mg | 43.7 |
| TB-500 Latest Aug 6, 2026 | 3 | 99.56% | 1 / 1 | $6.80/mg $34 / 5 mg | 83.2 |
| NAD+ Listed, not yet tested | n/a | n/a | 0 | $0.09/mg $45 / 500 mg | n/a |
- BPC-157 35.3
Rank 20, 0 of 1 passed, $5.60/mg
- CJC-1295 (no DAC) 49.2
Rank 5, 0 of 1 passed, $6.40/mg
- GHK-Cu 97.6
Rank 8, 1 of 1 passed, $0.48/mg
- Ipamorelin 56.5
Rank 10, 0 of 1 passed, $4.80/mg
- PT-141 100.0
Rank 8, 1 of 1 passed, $3.40/mg
- Semaglutide 43.7
Rank 15, 0 of 1 passed, $8.20/mg
- TB-500 83.2
Rank 3, 1 of 1 passed, $6.80/mg
- NAD+ n/a
Rank n/a, 0 of 0 passed, $0.09/mg
Test history
Every independent result we hold for Penguin Peptides, newest first. Fill is the measured quantity as a share of the label claim.
- BPC-157 Janoshik Analytical Purity below 99.5%
- TB-500 Janoshik Analytical Pass
- Semaglutide Janoshik Analytical Purity below 99.5%
- GHK-Cu Janoshik Analytical Pass
- Ipamorelin Janoshik Analytical Purity below 99.5%
- CJC-1295 (no DAC) Janoshik Analytical Identity not confirmed
- PT-141 Janoshik Analytical Pass