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The Roundup
vendor audit · shutdown record

Is Peptide Sciences legit?

Peptide Sciences is no longer operating. The site ceased on 2026-03-06 (Quality collapse on retatrutide batches over 15 months culminated in counterfeit detection by Janoshik; federal pressure followed; operations ceased). Do not order. We keep this audit public because the legitimacy question still surfaces in search — buyers deserve a clear answer rather than a 404.

last reviewed 2026-03-06 · shutdown audit
§ 01

Signal table

Status
Shut down· as of 2026-03-06
Audit tier
public-data only
Composite score
0/100
Ships to
Payment
crypto, card
Last reviewed
2026-03-06
§ 02

What works, what does not

pros
  • +Historical: most-recommended vendor on r/Peptides through 2024 and into 2025
  • +Historical: broad catalog including the GLP-1 mainstream
  • +Historical: published Janoshik COAs on most batches
cons
  • −Permanently offline since March 6, 2026
  • −37 retatrutide samples failed Janoshik purity claims between Dec 2024 and Mar 2026
  • −At least one batch was flagged by Janoshik as a counterfeit (mass-spec identity mismatch)
  • −Federal pressure followed the quality collapse
§ 03

What we mean by "legit"

We do not use "legit" as a single yes-or-no signal. A vendor is legit when four things hold: identifiable corporate operator, third-party or independently-mirrored COAs, shipping and payment infrastructure that consistently delivers, and a complaint history that surfaces real issues rather than vanishes them. Our composite score is the weighted average of those four — shipping, pricing, support, COA quality — and you can read the full rubric at /methodology.

For Peptide Sciences the audit is "public-data tier" — we aggregate vendor disclosures, third-party COA mirrors, operating-history evidence, and complaint patterns. A first-hand test order is still pending and the page will be upgraded when that lands.

§ 04

Verdict

read full audit →
one-line verdict

Shut down March 6, 2026 after 37 retatrutide samples failed Janoshik testing across 15 months. Do not order.

composite 0/100 · audit tier public-data · last reviewed 2026-03-06
§ 05

Other audited vendors

is ascension-peptides legit?
Ascension Peptides
84/100 · public-data
is biotech-peptides legit?
BioTech Peptides
76/100 · public-data
is limitless-life legit?
Limitless Life Nootropics
91/100 · full
§ 06

Sources

  1. [01]Janoshik public-tests database· Janoshik Analytical
  2. [02]Why Peptide Sciences shut down (March 2026)· The Peptide Catalog
  3. [03]Peptide Sciences shutdown timeline + FDA pressure· PeptideLaws
  4. [04]Every peptide vendor that shut down 2025-2026· The Peptide Catalog
  5. [05]Retatrutide identity fraud analysis· Kilo Biotechnology
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