Ranked 8 of 20
Peptide Maxxing
Newer vendor with near complete certificate verification. Prices have been trending down this quarter.
Overall score
85.5
Strong. Board median 77.9.
Score breakdown
-
Purity
40% weight84.0
5 of 6 samples passed
-
Trust
25% weight94
6 of 7 checks earned in full
-
Delivery
20% weight82
3 business day median
-
Value
15% weight80
0.90x the market median per mg
Transparency checks
Each check is worth a fixed number of points. Together they make up the trust score of 94.
- Certificates readable before checkout 20 / 20
- Lot on certificate matches the vial 20 / 20
- Testing lab named 12 / 12
- Certificate verifies at the lab 13 / 13
- Mass spec identity confirmation 10 / 10
- Trading history (2 years) 4 / 10
- No public enforcement actions 15 / 15
Facts
- Headquarters
- Not disclosed
- Ships from
- United States
- Trading since
- 2024
- Payments
- Cards, Crypto
- Delivery
- 3 business day median
- Carriers
- USPS, UPS. Free over $125
- Testing labs
- Janoshik Analytical, MZ Biolabs
- Public reviews
- 4.6 average across 180 reviews
What stands out
- Nearly every certificate re-checks at the lab
- Competitive pricing on metabolic peptides
Where it falls short
- Short trading history
- Small review base
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 Jun 4, 2026 | 15 | 99.30% | 0 / 1 | $6.40/mg $32 / 5 mg | 42.1 |
| Cagrilintide Latest Jul 19, 2026 | 4 | 99.60% | 1 / 1 | $12.0/mg $60 / 5 mg | 100.0 |
| Retatrutide Latest Oct 15, 2026 | 7 | 99.73% | 1 / 1 | $8.10/mg $81 / 10 mg | 100.0 |
| Semaglutide Latest Apr 17, 2026 | 11 | 99.66% | 1 / 1 | $9.40/mg $47 / 5 mg | 84.9 |
| Tesamorelin Latest Feb 10, 2026 | 4 | 99.55% | 1 / 1 | $6.60/mg $66 / 10 mg | 80.4 |
| Tirzepatide Latest Sep 3, 2026 | 6 | 99.69% | 1 / 1 | $6.40/mg $64 / 10 mg | 96.0 |
| GHK-Cu Listed, not yet tested | n/a | n/a | 0 | $0.54/mg $27 / 50 mg | n/a |
| Ipamorelin Listed, not yet tested | n/a | n/a | 0 | $5.40/mg $27 / 5 mg | n/a |
- BPC-157 42.1
Rank 15, 0 of 1 passed, $6.40/mg
- Cagrilintide 100.0
Rank 4, 1 of 1 passed, $12.0/mg
- Retatrutide 100.0
Rank 7, 1 of 1 passed, $8.10/mg
- Semaglutide 84.9
Rank 11, 1 of 1 passed, $9.40/mg
- Tesamorelin 80.4
Rank 4, 1 of 1 passed, $6.60/mg
- Tirzepatide 96.0
Rank 6, 1 of 1 passed, $6.40/mg
- GHK-Cu n/a
Rank n/a, 0 of 0 passed, $0.54/mg
- Ipamorelin n/a
Rank n/a, 0 of 0 passed, $5.40/mg
Test history
Every independent result we hold for Peptide Maxxing, newest first. Fill is the measured quantity as a share of the label claim.
- Retatrutide Janoshik Analytical Pass
- Tirzepatide MZ Biolabs Pass
- Cagrilintide Janoshik Analytical Pass
- BPC-157 MZ Biolabs Purity below 99.5%
- Semaglutide Janoshik Analytical Pass
- Tesamorelin Janoshik Analytical Pass