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PepIndex

Testing laboratory

Freedom Diagnostics Testing

Freedom Diagnostics Testing, Franklin, Tennessee, signed 272 of the certificates behind these rankings, covering 13 vendors and 42 compounds, at a mean reported purity of 99.67%. Its own site makes no ISO/IEC 17025 claim. It publishes a public lookup, so a report can be pulled from the laboratory rather than taken from the vendor.

272 certificates · 13 vendors · 42 compounds · assays 21 Nov 2025 to 21 Sept 2026

Accreditation and verification

Location
Franklin, Tennessee
Website
freedomdiagnosticstesting.com
ISO/IEC 17025
No claim on its siteThe laboratory’s site describes its independence and a public lookup of more than 42,000 reports, and makes no ISO/IEC 17025 claim.laboratory site read 30 Sept 2026
Attributed by vendors
ZC LabsThese vendors record ISO/IEC 17025 for their testing laboratory and use only this one, so the claim can be attributed here. It is their claim, read from their sites, not the laboratory’s.
Report lookup
Public lookup on the laboratory’s siteEvery certificate prints a Search Code in the table at the top right, formed from a short client prefix and the accession number. Enter it in the lab’s own lookup and the report comes back from the laboratory, not from the vendor.A lookup answers for the sample the laboratory received: it confirms a report exists and what it says, not that the vial in your hand came from that lot. The lot number on the vial has to match.

What its certificates report

272 lots
Assayed purity

270 of 272 lots at 99% or above; mean 99.67%.

0250500<95%: 0 lots<95%95–97%: 0 lots95–97%97–98%: 0 lots97–98%98–99%: 2 lots98–99%99–99.5%: 59 lots99–99.5%≥99.5%: 211 lots211≥99.5%
Assayed purity
Rangelots
<95%0
95–97%0
97–98%0
98–99%2
99–99.5%59
≥99.5%211
Assayed mass vs label

29% of lots within 5% of the labelled mass; median gap 9.7%.

050100≤2%: 33 lots≤2%2–5%: 46 lots2–5%5–10%: 59 lots5–10%10–20%: 93 lots9310–20%>20%: 41 lots>20%
Assayed mass vs label
Rangelots
≤2%33
2–5%46
5–10%59
10–20%93
>20%41

These figures describe what the laboratory reported about the samples it received. They are a property of those samples and of the vendors that sent them, not a rating of the laboratory.

Vendors using this laboratory

VendorCertificates from this lab
PeptidePlugs70
ZC Labs39
Simple Peptide29
Modern Aminos27
Bench Grade Peptides24
Origin Labs24
VLVertex Labs21
NeuroLabs Research14
Amino Club8
Koi Peptides6
PPeptime4
Prime Peptides3
Protide Health3

40 most recent of 272

All certificates
AssayedCompoundVendorLotPurityLabel → assayedDocument
21 Sept 2026KPVPeptidePlugs1130L-DK99.84%30 mg → 36.73 mgOpen
18 Sept 2026SemaxOrigin LabsOrig260916009599.97%10 mg → 12 mgOpen
18 Sept 2026RetatrutideOrigin LabsOrig260916009199.82%30 mg → 32.65 mgOpen
18 Sept 2026SelankOrigin LabsOrig260916009499.77%10 mg → 11.28 mgOpen
18 Sept 2026SS-31Origin LabsOrig260916009399.95%10 mg → 13.46 mgOpen
18 Sept 2026DSIPOrigin LabsOrig260916009299.62%10 mg → 9.65 mgOpen
17 Sept 2026BPC-157Simple PeptideBPC20-092026-199.76%20 mg → 22.28 mgOpen
17 Sept 2026BPC-157Simple PeptideBPTB30-092026-199.12%15 mg → 15.86 mgOpen
16 Sept 2026KPVPeptidePlugs71110L-DK99.59%10 mg → 13.23 mgOpen
16 Sept 2026TesamorelinPeptidePlugs29310L-DK99.9%10 mg → 11.88 mgOpen
9 Sept 2026IpamorelinPeptidePlugs710410L-DK99.6%10 mg → 9.05 mgOpen
9 Sept 2026OxytocinPeptidePlugs254010L-DK99.19%10 mg → 9.6 mgOpen
6 Sept 2026GlutathioneOrigin LabsOrig260903081499.96%1500 mg → 1545.52 mgOpen
6 Sept 2026TesamorelinOrigin LabsOrig260903081999.75%10 mg → 12.53 mgOpen
6 Sept 2026GHK-CuOrigin LabsOrig260903081399.9%100 mg → 113.2 mgOpen
6 Sept 2026KPVOrigin LabsOrig260903081599.68%10 mg → 14.12 mgOpen
6 Sept 2026MOTS-cOrigin LabsOrig260903081699.8%40 mg → 49.24 mgOpen
6 Sept 2026TirzepatideOrigin LabsOrig260903082199.83%10 mg → 14.29 mgOpen
6 Sept 2026NAD+Origin LabsOrig260903082099.99%1000 mg → 1026.75 mgOpen
6 Sept 20265-Amino-1MQOrigin LabsOrig260903081099.93%50 mg → 58.13 mgOpen
6 Sept 2026BPC-157Origin LabsOrig260903081199.42%10 mg → 13.72 mgOpen
1 Sept 2026SS-31PeptidePlugs112450L-DK99.94%50 mg → 48.24 mgOpen
30 Aug 20265-Amino-1MQPeptidePlugs721510L-DK99.93%50 mg → 51.98 mgOpen
30 Aug 2026TB-500PeptidePlugs101610L-DK99.35%10 mg → 12.65 mgOpen
26 Aug 2026GlutathioneZC LabsZCLa260824040799.91%1500 mg → 1556.58 mgOpen
26 Aug 2026GlutathioneZC LabsZCLa260825001899.98%1500 mg → 1541.96 mgOpen
26 Aug 2026RetatrutideZC LabsZCLa260825001999.8%10 mg → 10.89 mgOpen
25 Aug 2026PT-141VLVertex Labs260819084599.97%10 mg → 9.08 mgOpen
25 Aug 2026KPVVLVertex Labs260819084699.71%10 mg → 9.94 mgOpen
25 Aug 2026GlutathioneVLVertex Labs260819084799.74%1500 mg → 1534.67 mgOpen
25 Aug 2026AOD-9604VLVertex Labs260819084999.07%10 mg → 8.37 mgOpen
25 Aug 2026SemaxVLVertex Labs260819085199.93%10 mg → 11.38 mgOpen
25 Aug 2026EpithalonVLVertex Labs260819085299.3%10 mg → 9.33 mgOpen
25 Aug 2026Melanotan IIVLVertex Labs260819085399.85%10 mg → 9.3 mgOpen
25 Aug 2026RetatrutideVLVertex Labs260819085499.83%30 mg → 33.82 mgOpen
25 Aug 2026CagrilintideVLVertex Labs260819085599.8%10 mg → 10.48 mgOpen
25 Aug 2026DSIPVLVertex Labs260819085699%10 mg → 9.3 mgOpen
23 Aug 2026RetatrutideVLVertex Labs260820000899.99%20 mg → 23.29 mgOpen
22 Aug 2026EpithalonPeptidePlugs703710L-DK99.73%10 mg → 11.05 mgOpen
22 Aug 2026GHK-CuPeptidePlugs208100C-DK99.83%100 mg → 116.79 mgOpen