Is it legit? Evidence checks on 25 research-peptide vendors

Question 1

Is Origin Labs legit?

Accepted Answer

Yes, on the evidence PepIndex holds. We have read 25 certificate records for Origin Labs, issued by 2 laboratories, and score it 89.1/100 on 96% data coverage — rank 1 of 57. Across those lots the mean assayed purity is 99.79%, and the weakest single lot came back at 99.35%. 3 of 25 lots assayed below the mass printed on the label. PepIndex records those laboratories as holding ISO/IEC 17025 accreditation. Its certificates can be read without an account, so anyone can check these figures. On the business side it publishes a named legal entity, a postal address and prices visible without an account. PepIndex has located no independent customer reviews for Origin Labs, so nothing here speaks to its service or fulfilment. A score measures what a vendor publishes about its testing and its business. It does not measure the contents of any vial a buyer actually receives, and PepIndex does not commission its own assays.

Question 2

Is Next Gen Peptides legit?

Accepted Answer

Yes, on the evidence PepIndex holds. We have read 114 certificate records for Next Gen Peptides, all issued by ILS Laboratories, and score it 87.7/100 on 92% data coverage — rank 2 of 57. Across those lots the mean assayed purity is 99.62%, and the weakest single lot came back at 96.10%. Every lot with both figures assayed at or above its label claim, so none was underfilled. PepIndex records the laboratory on those certificates, ILS Laboratories, as holding ISO/IEC 17025 accreditation. Its certificates can be read without an account, so anyone can check these figures. On the business side it publishes a named legal entity and prices visible without an account. PepIndex has located no independent customer reviews for Next Gen Peptides, so nothing here speaks to its service or fulfilment. A score measures what a vendor publishes about its testing and its business. It does not measure the contents of any vial a buyer actually receives, and PepIndex does not commission its own assays.

Question 3

Is ZC Labs legit?

Accepted Answer

Yes, on the evidence PepIndex holds. We have read 39 certificate records for ZC Labs, all issued by Freedom Diagnostics Testing, and score it 87.2/100 on 93% data coverage — rank 3 of 57. Across those lots the mean assayed purity is 99.68%, and the weakest single lot came back at 99.06%. 8 of 39 lots assayed below the mass printed on the label. PepIndex records the laboratory on those certificates, Freedom Diagnostics Testing, as holding ISO/IEC 17025 accreditation. The laboratory named on ZC Labs's own profile does not match the laboratory on the certificates PepIndex has read, so the stated name is not relied on here. Its certificates are age gated, which limits independent checking. On the business side it publishes a named legal entity, a postal address and prices visible without an account. PepIndex has located no independent customer reviews for ZC Labs, so nothing here speaks to its service or fulfilment. Because its certificates are not openly readable, a buyer cannot verify a specific lot without the vendor's cooperation. A score measures what a vendor publishes about its testing and its business. It does not measure the contents of any vial a buyer actually receives, and PepIndex does not commission its own assays.

Question 4

Is Amino Club legit?

Accepted Answer

Yes, on the evidence PepIndex holds. We have read 23 certificate records for Amino Club, issued by 2 laboratories, and score it 86.1/100 on 95% data coverage — rank 4 of 57. Across those lots the mean assayed purity is 99.61%, and the weakest single lot came back at 99.11%. 1 of 23 lots assayed below the mass printed on the label. PepIndex records those laboratories as holding ISO/IEC 17025 accreditation. Its certificates are age gated, which limits independent checking. On the business side it publishes a named legal entity, a postal address and prices visible without an account. PepIndex has located no independent customer reviews for Amino Club, so nothing here speaks to its service or fulfilment. Because its certificates are not openly readable, a buyer cannot verify a specific lot without the vendor's cooperation. A score measures what a vendor publishes about its testing and its business. It does not measure the contents of any vial a buyer actually receives, and PepIndex does not commission its own assays.

Question 5

Is PeptidePlugs legit?

Accepted Answer

Yes, on the evidence PepIndex holds. We have read 70 certificate records for PeptidePlugs, issued by 2 laboratories, and score it 82.6/100 on 90% data coverage — rank 5 of 57. Across those lots the mean assayed purity is 99.67%, and the weakest single lot came back at 99.04%. 21 of 70 lots assayed below the mass printed on the label. PepIndex holds no ISO/IEC 17025 accreditation record for those laboratories either way. Its certificates can be read without an account, so anyone can check these figures. On the business side it publishes a named legal entity, a postal address and prices visible without an account. PepIndex has located no independent customer reviews for PeptidePlugs, so nothing here speaks to its service or fulfilment. A score measures what a vendor publishes about its testing and its business. It does not measure the contents of any vial a buyer actually receives, and PepIndex does not commission its own assays.

Question 6

Is Modern Aminos legit?

Accepted Answer

Yes, on the evidence PepIndex holds. We have read 30 certificate records for Modern Aminos, issued by 2 laboratories, and score it 79.7/100 on 95% data coverage — rank 6 of 57. Across those lots the mean assayed purity is 99.65%, and the weakest single lot came back at 99.06%. 9 of 30 lots assayed below the mass printed on the label. PepIndex records those laboratories as holding ISO/IEC 17025 accreditation. Its certificates are account required, which limits independent checking. On the business side it publishes a named legal entity, a postal address and prices visible without an account. PepIndex has located no independent customer reviews for Modern Aminos, so nothing here speaks to its service or fulfilment. Because its certificates are not openly readable, a buyer cannot verify a specific lot without the vendor's cooperation. A score measures what a vendor publishes about its testing and its business. It does not measure the contents of any vial a buyer actually receives, and PepIndex does not commission its own assays.

Question 7

Is Bench Grade Peptides legit?

Accepted Answer

Yes, on the evidence PepIndex holds. We have read 53 certificate records for Bench Grade Peptides, issued by 2 laboratories, and score it 79.4/100 on 87% data coverage — rank 7 of 57. Across those lots the mean assayed purity is 99.71%, and the weakest single lot came back at 98.54%. 1 of 53 lots assayed below the mass printed on the label. PepIndex holds no ISO/IEC 17025 accreditation record for those laboratories either way. Its certificates can be read without an account, so anyone can check these figures. On the business side it publishes a named legal entity, a postal address and prices visible without an account. PepIndex has located no independent customer reviews for Bench Grade Peptides, so nothing here speaks to its service or fulfilment. A score measures what a vendor publishes about its testing and its business. It does not measure the contents of any vial a buyer actually receives, and PepIndex does not commission its own assays.

Question 8

Is Hydro Research Peptides legit?

Accepted Answer

Yes, with one qualification. PepIndex holds 32 certificate records for Hydro Research Peptides, of which 21 come from an outside laboratory and 11 name the vendor itself, and scores it 78.7/100 on 85% data coverage at rank 8 of 57.

The 21 third-party certificates are the ones that count toward the testing score; the self-issued 11 are recorded but not treated as corroboration.
Across those lots the mean assayed purity is 99.58%, and the weakest single lot came back at 98.16%.
6 of 32 lots assayed below the mass printed on the label.
PepIndex records those laboratories as holding ISO/IEC 17025 accreditation.
Its certificates can be read without an account, so anyone can check these figures.
On the business side it publishes prices visible without an account.

What this does not tell you

PepIndex has located no independent customer reviews for Hydro Research Peptides, so nothing here speaks to its service or fulfilment.
A score measures what a vendor publishes about its testing and its business. It does not measure the contents of any vial a buyer actually receives, and PepIndex does not commission its own assays.

Full record for Hydro Research Peptides, with every certificate and the score calculation →

Question 9

Is Stealth Research Labs legit?

Accepted Answer

Yes, on the evidence PepIndex holds. We have read 10 certificate records for Stealth Research Labs, all issued by Bioviridian Inc., and score it 78.1/100 on 87% data coverage — rank 9 of 57. Across those lots the mean assayed purity is 99.79%, and the weakest single lot came back at 99.65%. Every lot with both figures assayed at or above its label claim, so none was underfilled. PepIndex holds no ISO/IEC 17025 accreditation record for the laboratory on those certificates, Bioviridian Inc., either way. Its certificates can be read without an account, so anyone can check these figures. On the business side it publishes a named legal entity and prices visible without an account. PepIndex has located no independent customer reviews for Stealth Research Labs, so nothing here speaks to its service or fulfilment. A score measures what a vendor publishes about its testing and its business. It does not measure the contents of any vial a buyer actually receives, and PepIndex does not commission its own assays.

Question 10

Is One Aminos legit?

Accepted Answer

Yes, on the evidence PepIndex holds. We have read 27 certificate records for One Aminos, all issued by UNITED LABORATORIES, and score it 78/100 on 85% data coverage — rank 10 of 57. Across those lots the mean assayed purity is 99.64%, and the weakest single lot came back at 99.33%. 1 of 27 lots assayed below the mass printed on the label. PepIndex holds no ISO/IEC 17025 accreditation record for the laboratory on those certificates, UNITED LABORATORIES, either way. Its certificates can be read without an account, so anyone can check these figures. On the business side it publishes a postal address and prices visible without an account. PepIndex has located no independent customer reviews for One Aminos, so nothing here speaks to its service or fulfilment. A score measures what a vendor publishes about its testing and its business. It does not measure the contents of any vial a buyer actually receives, and PepIndex does not commission its own assays.

Question 11

Is Simple Peptide legit?

Accepted Answer

Yes, on the evidence PepIndex holds. We have read 30 certificate records for Simple Peptide, issued by 2 laboratories, and score it 77.2/100 on 90% data coverage — rank 11 of 57. Across those lots the mean assayed purity is 99.64%, and the weakest single lot came back at 99.05%. 5 of 30 lots assayed below the mass printed on the label. PepIndex holds no ISO/IEC 17025 accreditation record for those laboratories either way. Its certificates can be read without an account, so anyone can check these figures. On the business side it publishes a named legal entity and a postal address. PepIndex has located no independent customer reviews for Simple Peptide, so nothing here speaks to its service or fulfilment. A score measures what a vendor publishes about its testing and its business. It does not measure the contents of any vial a buyer actually receives, and PepIndex does not commission its own assays.

Question 12

Is Koi Peptides legit?

Accepted Answer

Yes, on the evidence PepIndex holds. We have read 8 certificate records for Koi Peptides, issued by 3 laboratories, and score it 75.1/100 on 90% data coverage — rank 12 of 57. Across those lots the mean assayed purity is 99.51%, and the weakest single lot came back at 98.96%. 3 of 8 lots assayed below the mass printed on the label. PepIndex holds no ISO/IEC 17025 accreditation record for those laboratories either way. The laboratory named on Koi Peptides's own profile does not match the laboratory on the certificates PepIndex has read, so the stated name is not relied on here. Its certificates are age gated, which limits independent checking. On the business side it publishes a named legal entity, a postal address and prices visible without an account. PepIndex has located no independent customer reviews for Koi Peptides, so nothing here speaks to its service or fulfilment. Because its certificates are not openly readable, a buyer cannot verify a specific lot without the vendor's cooperation. A score measures what a vendor publishes about its testing and its business. It does not measure the contents of any vial a buyer actually receives, and PepIndex does not commission its own assays.

Question 13

Is NeuroLabs Research legit?

Accepted Answer

Yes, on the evidence PepIndex holds. We have read 14 certificate records for NeuroLabs Research, all issued by FreedomDiagnostics, and score it 74.6/100 on 87% data coverage — rank 13 of 57. Across those lots the mean assayed purity is 99.57%, and the weakest single lot came back at 99.16%. 7 of 14 lots assayed below the mass printed on the label. PepIndex holds no ISO/IEC 17025 accreditation record for the laboratory on those certificates, FreedomDiagnostics, either way. The laboratory named on NeuroLabs Research's own profile does not match the laboratory on the certificates PepIndex has read, so the stated name is not relied on here. Its certificates can be read without an account, so anyone can check these figures. On the business side it publishes a named legal entity and prices visible without an account. PepIndex has located no independent customer reviews for NeuroLabs Research, so nothing here speaks to its service or fulfilment. A score measures what a vendor publishes about its testing and its business. It does not measure the contents of any vial a buyer actually receives, and PepIndex does not commission its own assays.

Question 14

Is Prime Peptides legit?

Accepted Answer

Read the record first. PepIndex holds 1 regulatory or enforcement action on file against Prime Peptides, alongside 9 certificate records, and scores it 74.4/100 on 94% data coverage. An authority action is publicly verifiable and cannot be manufactured, which is why it weighs more here than any review. Across those lots the mean assayed purity is 99.73%, and the weakest single lot came back at 99.02%. 1 of 9 lots assayed below the mass printed on the label. PepIndex records those laboratories as holding ISO/IEC 17025 accreditation. The laboratory named on Prime Peptides's own profile does not match the laboratory on the certificates PepIndex has read, so the stated name is not relied on here. Its certificates can be read without an account, so anyone can check these figures. On the business side it publishes a named legal entity, a postal address and prices visible without an account. PepIndex has located no independent customer reviews for Prime Peptides, so nothing here speaks to its service or fulfilment. A score measures what a vendor publishes about its testing and its business. It does not measure the contents of any vial a buyer actually receives, and PepIndex does not commission its own assays.

Question 15

Is Ascension Peptides legit?

Accepted Answer

Yes, on the evidence PepIndex holds. We have read 33 certificate records for Ascension Peptides, issued by 2 laboratories, and score it 74.4/100 on 85% data coverage — rank 15 of 57. Across those lots the mean assayed purity is 99.63%, and the weakest single lot came back at 98.44%. 17 of 33 lots assayed below the mass printed on the label. PepIndex holds no ISO/IEC 17025 accreditation record for those laboratories either way. Its certificates can be read without an account, so anyone can check these figures. On the business side it publishes a postal address and prices visible without an account. PepIndex has located no independent customer reviews for Ascension Peptides, so nothing here speaks to its service or fulfilment. A score measures what a vendor publishes about its testing and its business. It does not measure the contents of any vial a buyer actually receives, and PepIndex does not commission its own assays.

Question 16

Is Transition Biotech legit?

Accepted Answer

Yes, on the evidence PepIndex holds. We have read 7 certificate records for Transition Biotech, all issued by Kovera Labs, and score it 74.3/100 on 87% data coverage — rank 16 of 57. Across those lots the mean assayed purity is 99.64%, and the weakest single lot came back at 99.37%. 1 of 7 lots assayed below the mass printed on the label. PepIndex checked the laboratory on those certificates, Kovera Labs, for ISO/IEC 17025 accreditation and found none on record. Its certificates can be read without an account, so anyone can check these figures. On the business side it publishes a named legal entity and prices visible without an account. PepIndex has located no independent customer reviews for Transition Biotech, so nothing here speaks to its service or fulfilment. A score measures what a vendor publishes about its testing and its business. It does not measure the contents of any vial a buyer actually receives, and PepIndex does not commission its own assays.

Question 17

Is Curo legit?

Accepted Answer

Yes, on the evidence PepIndex holds. We have read 17 certificate records for Curo, all issued by BTLabs, and score it 73.9/100 on 95% data coverage — rank 17 of 57. Across those lots the mean assayed purity is 99.74%, and the weakest single lot came back at 99.50%. Every lot with both figures assayed at or above its label claim, so none was underfilled. PepIndex records the laboratory on those certificates, BTLabs, as holding ISO/IEC 17025 accreditation. Its certificates can be read without an account, so anyone can check these figures. On the business side it publishes a named legal entity, a postal address and prices visible without an account. PepIndex has located no independent customer reviews for Curo, so nothing here speaks to its service or fulfilment. A score measures what a vendor publishes about its testing and its business. It does not measure the contents of any vial a buyer actually receives, and PepIndex does not commission its own assays.

Question 18

Is Protide Health legit?

Accepted Answer

Yes, on the evidence PepIndex holds. We have read 3 certificate records for Protide Health, all issued by Freedom Diagnostics Testing, and score it 72.8/100 on 90% data coverage — rank 18 of 57. Across those lots the mean assayed purity is 99.83%, and the weakest single lot came back at 99.72%. 1 of 3 lots assayed below the mass printed on the label. PepIndex holds no ISO/IEC 17025 accreditation record for the laboratory on those certificates, Freedom Diagnostics Testing, either way. The laboratory named on Protide Health's own profile does not match the laboratory on the certificates PepIndex has read, so the stated name is not relied on here. Its certificates are age gated, which limits independent checking. On the business side it publishes a named legal entity, a postal address and prices visible without an account. PepIndex has located no independent customer reviews for Protide Health, so nothing here speaks to its service or fulfilment. Because its certificates are not openly readable, a buyer cannot verify a specific lot without the vendor's cooperation. A score measures what a vendor publishes about its testing and its business. It does not measure the contents of any vial a buyer actually receives, and PepIndex does not commission its own assays.

Question 19

Is Evo Labs Research legit?

Accepted Answer

Yes, on the evidence PepIndex holds. We have read 3 certificate records for Evo Labs Research, issued by 2 laboratories, and score it 71.9/100 on 85% data coverage — rank 19 of 57. Across those lots the mean assayed purity is 99.39%, and the weakest single lot came back at 99.09%. Every lot with both figures assayed at or above its label claim, so none was underfilled. PepIndex holds no ISO/IEC 17025 accreditation record for those laboratories either way. Its certificates can be read without an account, so anyone can check these figures. On the business side it publishes a postal address and prices visible without an account. PepIndex has located no independent customer reviews for Evo Labs Research, so nothing here speaks to its service or fulfilment. A score measures what a vendor publishes about its testing and its business. It does not measure the contents of any vial a buyer actually receives, and PepIndex does not commission its own assays.

Question 20

Is Good Science Bio legit?

Accepted Answer

Not on the evidence PepIndex holds. We have no certificate records for Eternal Peptides, so nothing here establishes what is in its vials, and its 66/100 rests on business and pricing disclosure alone.

Eternal Peptides names no testing laboratory that PepIndex could record.
Its certificates can be read without an account, so anyone can check these figures.
On the business side it publishes prices visible without an account.

What this does not tell you

An absence of certificates in this index is not proof of a problem — it means the evidence a buyer would need has not been published or could not be reached.
PepIndex has located no independent customer reviews for Eternal Peptides, so nothing here speaks to its service or fulfilment.
A score measures what a vendor publishes about its testing and its business. It does not measure the contents of any vial a buyer actually receives, and PepIndex does not commission its own assays.

Full record for Eternal Peptides, with every certificate and the score calculation →

Question 21

Is Northline Labs legit?

Accepted Answer

Yes, on the evidence PepIndex holds. We have read 33 certificate records for Northline Labs, issued by 2 laboratories, and score it 68/100 on 90% data coverage — rank 21 of 57. Across those lots the mean assayed purity is 99.46%, and the weakest single lot came back at 98.31%. 12 of 33 lots assayed below the mass printed on the label. PepIndex records those laboratories as holding ISO/IEC 17025 accreditation. Its certificates can be read without an account, so anyone can check these figures. On the business side it publishes a postal address and prices visible without an account. PepIndex has located no independent customer reviews for Northline Labs, so nothing here speaks to its service or fulfilment. A score measures what a vendor publishes about its testing and its business. It does not measure the contents of any vial a buyer actually receives, and PepIndex does not commission its own assays.

Question 22

Is Eternal Peptides legit?

Accepted Answer

Not on the evidence PepIndex holds. We have no certificate records for Eternal Peptides, so nothing here establishes what is in its vials, and its 66/100 rests on business and pricing disclosure alone.

Eternal Peptides names no testing laboratory that PepIndex could record.
Its certificates can be read without an account, so anyone can check these figures.
On the business side it publishes prices visible without an account.

What this does not tell you

An absence of certificates in this index is not proof of a problem — it means the evidence a buyer would need has not been published or could not be reached.
PepIndex has located no independent customer reviews for Eternal Peptides, so nothing here speaks to its service or fulfilment.
A score measures what a vendor publishes about its testing and its business. It does not measure the contents of any vial a buyer actually receives, and PepIndex does not commission its own assays.

Full record for Eternal Peptides, with every certificate and the score calculation →

Question 23

Is GenX Peptides legit?

Accepted Answer

Not on the evidence PepIndex holds. We have no certificate records for Eternal Peptides, so nothing here establishes what is in its vials, and its 66/100 rests on business and pricing disclosure alone.

Eternal Peptides names no testing laboratory that PepIndex could record.
Its certificates can be read without an account, so anyone can check these figures.
On the business side it publishes prices visible without an account.

What this does not tell you

An absence of certificates in this index is not proof of a problem — it means the evidence a buyer would need has not been published or could not be reached.
PepIndex has located no independent customer reviews for Eternal Peptides, so nothing here speaks to its service or fulfilment.
A score measures what a vendor publishes about its testing and its business. It does not measure the contents of any vial a buyer actually receives, and PepIndex does not commission its own assays.

Full record for Eternal Peptides, with every certificate and the score calculation →

Question 24

Is True Research Labs legit?

Accepted Answer

Not on the evidence PepIndex holds. We have no certificate records for Eternal Peptides, so nothing here establishes what is in its vials, and its 66/100 rests on business and pricing disclosure alone.

Eternal Peptides names no testing laboratory that PepIndex could record.
Its certificates can be read without an account, so anyone can check these figures.
On the business side it publishes prices visible without an account.

What this does not tell you

An absence of certificates in this index is not proof of a problem — it means the evidence a buyer would need has not been published or could not be reached.
PepIndex has located no independent customer reviews for Eternal Peptides, so nothing here speaks to its service or fulfilment.
A score measures what a vendor publishes about its testing and its business. It does not measure the contents of any vial a buyer actually receives, and PepIndex does not commission its own assays.

Full record for Eternal Peptides, with every certificate and the score calculation →

Question 25

Is Evolve Peptides legit?

Accepted Answer

Not on the evidence PepIndex holds. We have no certificate records for Eternal Peptides, so nothing here establishes what is in its vials, and its 66/100 rests on business and pricing disclosure alone.

Eternal Peptides names no testing laboratory that PepIndex could record.
Its certificates can be read without an account, so anyone can check these figures.
On the business side it publishes prices visible without an account.

What this does not tell you

An absence of certificates in this index is not proof of a problem — it means the evidence a buyer would need has not been published or could not be reached.
PepIndex has located no independent customer reviews for Eternal Peptides, so nothing here speaks to its service or fulfilment.
A score measures what a vendor publishes about its testing and its business. It does not measure the contents of any vial a buyer actually receives, and PepIndex does not commission its own assays.

Full record for Eternal Peptides, with every certificate and the score calculation →

Is it legit? The top 25 vendors, answered from the record

The answers

Is Origin Labs legit?

Is Next Gen Peptides legit?

Is ZC Labs legit?

Is Amino Club legit?

Is PeptidePlugs legit?

Is Modern Aminos legit?

Is Bench Grade Peptides legit?

Is Hydro Research Peptides legit?

Is Stealth Research Labs legit?

Is One Aminos legit?

Is Simple Peptide legit?

Is Koi Peptides legit?

Is NeuroLabs Research legit?

Is Prime Peptides legit?

Is Ascension Peptides legit?

Is Transition Biotech legit?

Is Curo legit?

Is Protide Health legit?

Is Evo Labs Research legit?

Is Good Science Bio legit?

Is Northline Labs legit?

Is Eternal Peptides legit?

Is GenX Peptides legit?

Is True Research Labs legit?

Is Evolve Peptides legit?

How these answers are reached