Vendor and compound
PE-22-28 from Modern Aminos
Modern Aminos lists PE-22-28 at $5.40 per mg, 4% over the $5.20 peer median. No third-party certificate for PE-22-28 from Modern Aminos has been located, so nothing here establishes what is in the vial. The cheapest listed price for PE-22-28 anywhere in the index is $3.46 per mg at Polaris Peptides.
All PE-22-28 vendors · Modern Aminos profile · scores 88.1 of 100, rank 4 · 0 certificates for this compound · verified 1 Aug 2026
What it costs
| Vial | Listed price | Per mg | vs peer median | Listing |
|---|---|---|---|---|
| 10 mg | $54 | $5.40 | +4% | PE-22-28 10MG |
Read from the vendor’s own store and normalised per milligram, because a smaller vial at a lower sticker price is usually the dearer peptide.
What the laboratory found
No third-party certificate for PE-22-28 from Modern Aminos has been located.
That is a statement about the public record, not an accusation. The vendor may test and not publish, or publish somewhere we have not read. What it means for a buyer is that the price above is the only thing established here, and price says nothing about what is in the vial.
Vendors whose certificates you can check yourself lists the ones where that gap is closed.
Other vendors selling PE-22-28
| Vendor | Score | Per mg | Certificates for this compound |
|---|---|---|---|
| Polaris Peptides | 86.6 | $3.46 | 0 |
| PeptidePlugs | 86.3 | $4.00 | 0 |
| Simple Peptide | 84.9 | $7.20 | 0 |
| GenX Peptides | 69.2 | $5.00 | 0 |
| Biotech Peptides | 65.7 | $6.88 | 0 |
Ordered by overall evidence score. See every vendor listing PE-22-28.
Questions
Is PE-22-28 from Modern Aminos third-party tested?
Not so far as this index can establish. No third-party certificate for PE-22-28 from Modern Aminos has been located. The vendor may test and not publish; what can be said is that nothing public establishes the contents of a vial.
How much does PE-22-28 cost at Modern Aminos?
$5.40 per milligram, from 10 mg at $54. The peer median across every vendor we price for PE-22-28 is $5.20 per mg, so this is +4% against the market. Prices are normalised per milligram so vials of different sizes compare fairly.
Is Modern Aminos a good place to buy PE-22-28?
Modern Aminos scores 88.1 of 100 on the published rubric and ranks 4 overall, computed from its documentation rather than from opinion. For PE-22-28 specifically no certificate is on file, which is the gap to weigh. Polaris Peptides lists it cheaper at $3.46 per mg.