Is ZLZ peptides Legit?
Independent COA evidence review. No paid placement. Updated when new test data is available.
Partial evidence
ZLZ peptides has a Merit Score of 55/100 (Moderate). Some independent testing is on file; see the evidence breakdown below for a full picture.
- Independent COAs
- 5
- on file
- Distinct labs
- 1
- Janoshik Analytical
- Median purity
- 99.0%
- HPLC measured
- Latest COA
- Nov 2025
- last tested 7 months ago
Merit Score
ModerateThe Merit Score is earned from zero through observable evidence only — independent COA volume, lab diversity, median measured purity, and evidence breadth. No vendor pays to influence it; affiliate relationships are disclosed separately and have zero input into the score.
- independent COAs (volume × freshness × lab reputation) +15
- distinct independent labs +8
- median measured purity +20
- evidence breadth +10
- years active +2
Testing labs on file
- Janoshik Analytical
Lab diversity reduces the risk of results being influenced by a commercial relationship with a single testing lab.
Frequently asked questions
Is ZLZ peptides a legit peptide vendor? +
ZLZ peptides has 5 independent COAs on file. That is a limited evidence base; additional testing would strengthen confidence. The Merit Score is 55.
Is ZLZ peptides a scam? +
ZLZ peptides is not scam-flagged on Merit Verified. The registry flags vendors when observable fraud evidence exists (fabricated COAs, community-reported theft, fraudulent domains). No such flag has been set for this vendor.
Has ZLZ peptides been independently tested? +
Yes. 5 independent COAs for ZLZ peptides are on file on Merit Verified. A COA (Certificate of Analysis) certifies a specific tested lot. Having a COA on file is not a guarantee that every shipment was tested — it confirms those specific lots were independently verified.
Most recent test on file: November 2025.
What labs does ZLZ peptides use? +
Based on COAs on file, ZLZ peptides has used: Janoshik Analytical. Single-lab COA histories are common in this market; no independent second opinion exists in this dataset for this vendor.
What purity results has ZLZ peptides achieved? +
Across 3 COAs with purity data, ZLZ peptides's median measured purity is 99.02%. This is at the high end of the market, where most vendors cluster between 99–99.9%.
Purity figures reflect HPLC chromatography on tested lots only. They do not screen for residual solvents, heavy metals, endotoxins, or microbial contamination.
Is ZLZ peptides still operating? +
ZLZ peptides is listed as active on Merit Verified , with the most recent COA dated November 2025. Confirm directly with the vendor for current shipping and product availability.
This page reflects Merit Verified's registry as of the most recent data update. ZLZ peptides is not an affiliate partner of Merit Verified. The verification report is based on observable COA evidence only. Not medical or legal advice.