Is M-Peptides legit?
Finnrick scores M-Peptides 74% over 22 tests (fetched Sep 25, 2026). Finnrick lists mpeptides.
M-Peptides shipping and policies
M-Peptides shipping: USPS Priority Mail; orders placed before 12 PM EST ship the same business day.
- COAs
- on request
- Guarantee
- Terms say all sales are final with no returns, but the homepage FAQ promises...
From the store's own pages, checked Sep 26, 2026. Full details are in the policy table below.
Finnrick lab data
| Score | 74% Finnrick "Purity focus" |
|---|---|
| Rank | 167 of 345 vendors |
| Tests | 22, 15 passed and 7 failed of those Finnrick could classify |
| Latest test | Jun 22, 2026 |
| Status on Finnrick | Trading |
| Peptide tested | Tests | Score | Market median |
|---|---|---|---|
| Tirzepatide | 13 | 82% | $0.63/mg |
| Retatrutide | 9 | 66% | $1.50/mg |
Source: Finnrick profile for M-Peptides, fetched Sep 25, 2026. Scores with few tests are pulled toward the middle. A score describes past samples, not the vial you will get. What a Finnrick score means.
Store facts as stated
| Store site | mpeptides.com store page |
|---|---|
| Site status | live |
| COAs | on request |
| Shipping time | USPS Priority Mail; orders placed before 12 PM EST ship the same business day |
| Guarantee | Terms say all sales are final with no returns, but the homepage FAQ promises replacement or refund if specs are not met, free replacement for damaged or lost shipments and unopened returns within 30 days for store credit |
| What the site showed | Site is branded Masters Peptides; product pages claim published certificates but showed 'Certificate information is temporarily unavailable' and 'COA Available Upon Request', naming no lab. |
Read from the store's own pages on Sep 26, 2026: mpeptides.com/, mpeptides.com/about-us/, mpeptides.com/privacy-policy/, mpeptides.com/terms-conditions/, mpeptides.com/product/bpc-157-5mg-2/. Blank means we couldn't confirm it, not that the store doesn't offer it.
Store domains
| Domain | Domain check | Status | Listings |
|---|---|---|---|
| mpeptides. | vendor's own site | Public prices | 21 |
M-Peptides' score applies only to its own sites. Another domain using the name may be a second site or an unrelated seller; each has its own page.
Prices
Likely listing error: far below the normal range for that peptide, or out of line with the store's own sizes.
| Peptide | Size | Pack | Price | Per vial | $/mg | vs median | Stock | Listing |
|---|---|---|---|---|---|---|---|---|
| BPC-157 | 10 mg | 1 vial | Pack price $101.00 | $101.00 | $10.10 per mg | 2.32x | In stocklisting ↗ | BPC-157 / 10mg |
| BPC-157 | 20 mg | 1 vial | Pack price $180.00 | $180.00 | $9.00 per mg | 2.07x | In stocklisting ↗ | BPC-157 / 20mg |
| TB-500 | 5 mg | 1 vial | Pack price $76.00 | $76.00 | $15.20 per mg | 3.36x | In stocklisting ↗ | Thymosin Beta 4 (TB500) / 5mg |
| TB-500 | 10 mg | 1 vial | Pack price $141.00 | $141.00 | $14.10 per mg | 3.12x | In stocklisting ↗ | Thymosin Beta 4 (TB500) / 10mg |
| BPC-157 + TB-500 | 10 mg | 1 vial | Pack price $101.00 | $101.00 | $10.10 per mg | 2.56x | In stocklisting ↗ | Wolverine Blend - BPC-157 (5mg) / TB500 (5m… |
| BPC-157 + TB-500 | 20 mg | 1 vial | Pack price $180.00 | $180.00 | $9.00 per mg | 2.28x | In stocklisting ↗ | Wolverine Blend - BPC-157 (5mg) / TB500 (5m… |
| GHK-Cu | 50 mg | 1 vial | Pack price $80.00 | $80.00 | $1.60 per mg | 4.00x | In stocklisting ↗ | GHK-Cu / 50mg |
| GHK-Cu | 100 mg | 1 vial | Pack price $130.00 | $130.00 | $1.30 per mg | 3.25x | In stocklisting ↗ | GHK-Cu / 100mg |
| KLOW | 80 mg | 1 vial | Pack price $200.00 | $200.00 | $2.50 per mg | 2.45x | In stocklisting ↗ | KLOW - GHK-Cu (50mg) / KPV (10mg) / BPC-157… |
| CJC-1295 no DAC | 10 mg | 1 vial | Pack price $80.00 | $80.00 | $8.00 per mg | 2.04x | In stocklisting ↗ | CJC-1295 Without DAC (10mg) |
| CJC-1295 DAC | 5 mg | 1 vial | Pack price $100.00 | $100.00 | $20.00 per mg | 2.32x | In stocklisting ↗ | CJC-1295 - With DAC (5mg) |
| MOTS-csee note 1 | 10 mg | 1 vial | Pack price $200.00 | $200.00 | $20.00 per mglikely listing error | 8.00x | In stocklisting ↗ | MOTS-c / 10mg |
| MOTS-csee note 1 | 40 mg | 1 vial | Pack price $200.00 | $200.00 | $5.00 per mglikely listing error | 2.00x | In stocklisting ↗ | MOTS-c / 40mg |
| SS-31 | 10 mg | 1 vial | Pack price $120.00 | $120.00 | $12.00 per mg | 7.69x | In stocklisting ↗ | SS-31 / 10mg |
| SS-31 | 50 mg | 1 vial | Pack price $260.00 | $260.00 | $5.20 per mg | 3.33x | In stocklisting ↗ | SS-31 / 50mg |
| Semax | 10 mg | 1 vial | Pack price $51.00 | $51.00 | $5.10 per mg | 3.11x | In stocklisting ↗ | Semax (10mg) |
| Thymosin Alpha-1 | 10 mg | 1 vial | Pack price $120.00 | $120.00 | $12.00 per mg | 3.62x | In stocklisting ↗ | Thymosin Alpha 1 (TA1) (10mg) |
| Melanotan II | 10 mg | 1 vial | Pack price $100.00 | $100.00 | $10.00 per mg | 3.85x | In stocklisting ↗ | Melanotan 2 (10mg) |
| PT-141 | 10 mg | 1 vial | Pack price $120.00 | $120.00 | $12.00 per mg | 3.97x | In stocklisting ↗ | PT-141 (10mg) |
| Epitalon | 10 mg | 1 vial | Pack price $100.00 | $100.00 | $10.00 per mg | 4.92x | In stocklisting ↗ | Epitalon / 10mg |
| Epitalon | 50 mg | 1 vial | Pack price $150.00 | $150.00 | $3.00 per mg | 1.47x | In stocklisting ↗ | Epitalon / 50mg |
- M-Peptides, 2 listings in this table: Likely listing error: its 10 mg and 40 mg options are both $200 (the store's published price list, read Sep 26, 2026), so one of the two sizes is mispriced. back to the first of these listings for note 1
Prices read from the store on Nov 9, 2026. Always confirm on the store's site before buying.
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