Score breakdown
Strengths & weaknesses
- Publishes a downloadable archive of 79 certificates back to July 2023, old lots included
- 9 newer Liquilabs certificates carry a link that checks the result on the lab's own server
- Liquilabs lots from 2025 sit at 95-105% of label content in our mirror
- Named Slovak company with a street address, phone line and stated support hours
- AOD-9604, BPC-157, MOTS-c and TB-500 32-43% under our index median per mg in June 2026
- 12 of 16 Apigenex certificates from 2023-24 show under 90% of label content, low of 63%
- None of its certificates is in our Janoshik or Kovera mirrors, and Finnrick lists no tests
- Retatrutide sold under the code name "GLP-3"; we deduct 0.5 for regulatory exposure
- GLP-3 43% over our index median per mg in June 2026; the listed price has risen since
- No stated dispatch time and no US delivery estimate; returns only for defective goods
- A 2 April 2026 r/Biohackers post alleges fake certificates, a shell-company lab and underdosing; we could not substantiate it, and its Trustpilot profile read as removed on 12 October 2026
- Liquilabs, the lab behind its newer certificates, is a Czech company registered in September 2024 with a single owner; we found no accreditation record and no owner overlap with the shop
What it sells
6 PEPTIDES WE COVERShipping & payment
FROM PUBLISHED POLICY AND USER REPORTSAudit notes
FROM THE BENCHWhat we found
- A full certificate archive, none of it independent. The shop publishes every certificate it holds as one download, old lots included. We mirror 79 reports from July 2023 to May 2026, all from two Czech labs, Apigenex and Liquilabs. None of its products is in our Janoshik or Kovera mirrors, and Finnrick lists no tests.
- Older lots short of label. 12 of 16 Apigenex certificates from 2023-24 show under 90% of label content, with a median of 84%.
- Newer lots at label. 21 Liquilabs certificates from 2025 sit at 95-105% of label. 9 newer Liquilabs reports carry a link that checks the result on Liquilabs' own server.
- Retatrutide as "GLP-3". The product heading says only "GLP-3"; the description gives Lilly's code LY3437943.
- Prices mostly under our index. Four of six products 32-43% under our index median per mg in June 2026; GLP-3 43% over.
- A Reddit warning we could not substantiate. A 2 April 2026 r/Biohackers post alleges fake certificates, a shell-company lab and underdosing. The registers show Liquilabs is a small single-owner company formed in September 2024, with no owner overlap with the shop that we could find.
Particle Peptides scores 62/100 on public data.
"GLP-3" is Particle's name for retatrutide
The 10 mg product page, read on 10 October 2026, is headed "GLP-3 10mg with Mannitol". Its description opens "GLP-3 (LY3437943) is an innovative investigational peptide developed by Eli Lilly"; LY3437943 is Lilly's code for retatrutide. The word "retatrutide" appears only in the page's meta description and safety-sheet file name. A buyer who searches the shop for retatrutide may miss it.
FDA's August 2026 letters named code names beside the real compound, so a code name no longer keeps a product out of a letter. We take the same 0.5 regulatory-exposure deduction we applied to Panda Peptides for its "Triple Receptor Agonist" listing. The pattern is covered in code-name catalogs and FDA evasion.
What the certificate archive shows
| Lab and period | Reports with a content figure | Median % of label | Range | Under 90% |
|---|---|---|---|---|
| Apigenex, 2023-24 | 16 | 84% | 63-108% | 12 |
| Apigenex, 2025-26 | 21 | 94% | 64-141% | 4 |
| Liquilabs, 2025 | 21 | 99% | 95-105% | 0 |
| Liquilabs, 2026 | 16 | 106% | 85-120% | 2 |
Five further Liquilabs reports cover water and saline, with no peptide content figure. Every report in the archive is marked as a pass.
Points worth knowing:
- The older shortfalls are large. CJC-1295 with DAC lot PO-2023146 assayed at 3.15 mg in a 5 mg vial (63%). KPV lot 2024207 and ipamorelin lot 2024197 came in at 70% and 72%. GHRP-6 lot 2023149 assayed at 4.0 mg in a 5 mg vial (80%).
- Overfills are marked as passes too. GHK-Cu lot 2025240 assayed at 70.5 mg in a 50 mg vial (141%), and Selank lot 2026311 at 12.0 mg in a 10 mg vial (120%). The shop publishes these figures, which lets a buyer adjust the dose, but a vial 40% over label is not a clean result.
- Two labs, one lot, two answers. Retatrutide lot 2026302 has an Apigenex report at 9.95 mg (99.5%) and a Liquilabs report at 8.45 mg (84.5%). We cannot tell from the files which is right.
- The shop still uses Apigenex. It did not switch labs: Apigenex reports run through 2025 and one is dated 2026.
- Checkable reports. 9 Liquilabs reports embed a
base.liquilabs.czpublic-report link. Paste the ID into our COA verifier to compare the file with the lab's own record.
All of these are certificates the shop commissioned and chose to publish. No lab we know of has tested a Particle vial bought anonymously.
What Reddit says, and who Liquilabs is
On 2 April 2026 a user posted "WARNING: Avoid ParticlePeptides" in r/Biohackers (thread). It describes injection-site swelling, redness and burning, which the poster attributes to endotoxin contamination, and alleges fake certificates, a shell-company lab and underdosing. We could read only part of the post body, and we saw no lab test of a Particle vial in it. Replies split. Some commenters said another cause was possible, one reported a thymosin alpha-1 vial that did not fully dissolve, one reported four months of GHK-Cu use without problems, and one called Particle a long-time community favourite. We treat the post as an unverified allegation, not a finding.
We checked the registry claim. The Czech business register (ARES, read 12 October 2026) lists Liquilabs s.r.o., IČO 22067787, in Prague 5, registered on 19 September 2024, with share capital of CZK 10,000 and a single owner who is also its sole managing director, an individual with a Slovak address. Its registered trade-licence scope covers testing, measurement and analysis alongside research and development, IT services, consulting, advertising and trade intermediation. PARTICLE s.r.o. appears in the Slovak commercial register (registered 20 August 2014, Lučenec) with a different sole owner and managing director, so we found no overlap in owners or directors between the shop and the lab. That is a check of two registers, not proof of independence, and we have not searched accreditation registers for Liquilabs. The lab is small and new, which fits part of the poster's description, but the registers do not show it is a shell company or a related party.
Two more signals. Trustpilot's profile for particlepeptides.com read as removed ("goes against our guidelines") on 12 October 2026; we saw that through a page summarizer and have not confirmed it in a browser. And Particle's site says it has traded since 2015 and tests every batch for purity, identity, content, endotoxin, heavy metals and microbial counts. The age claim fits the records: the domain was registered on 15 June 2015 (RDAP) and PARTICLE s.r.o. on 20 August 2014. We could not corroborate the testing claim from outside the shop: Finnrick lists no tests, and none of its certificates is in our Janoshik or Kovera mirrors.
Lookalike sites and accounts
Particle's homepage warns that cloned sites and fake Instagram and TikTok accounts use its name, and a warning post on its blog lists them. It names the website particlepeptides.ca, which was live on 12 October 2026 as "Particles Peptides Canada" with a Mississauga, Ontario address, and these accounts: Instagram particles_peptide and particle_peptide, and TikTok partlclepeptides (with a lowercase L in place of the i), particlepeptide and particlepeptides. Particle says none of them is connected to it and that its only shop is particlepeptides.com. We have not verified who runs them, and we link only to particlepeptides.com. Check the address bar before you pay.
Payments, shipping and support
| Topic | What the shop states (10 October 2026) |
|---|---|
| Company | PARTICLE s.r.o., M. Gorkého 541/4982, Lučenec 984 01, Slovakia |
| Payment | online card payment, SEPA bank transfer, international wire |
| Dispatch | no timeframe stated; tracking number sent on dispatch |
| Carriers | DPD, Slovak Post, TNT, DHL Express |
| Delivery | EU "usually delivered in 2-7 business days"; international "7-21 business days depending on the destination"; no US estimate |
| Customs | outside Schengen the buyer carries the import risk; a seizure counts as a delivery failure on the buyer's side |
| Returns | defective goods only, after instruction from the shop; "a refund request does not in itself create an entitlement to a refund" |
| Support | info@particlepeptides.com, a Slovak phone number, Monday-Friday 8am-4pm CET |
The shipping figures on this page (5 days EU, 14 international) are midpoints of the shop's stated ranges. We have no delivery of our own to compare them with.
Pricing
Our 23 June 2026 capture of particlepeptides.com (6 rows, EUR converted at 1.07), against our vendor pricing index (nine vendors, built 25 June 2026):
| Product | Price | $/mg | Index median $/mg | Difference |
|---|---|---|---|---|
| AOD-9604 5 mg | $33.05 | 6.61 | 10.56 | -37% |
| BPC-157 5 mg | $27.83 | 5.57 | 8.43 | -34% |
| TB-500 10 mg | $69.58 | 6.96 | 10.22 | -32% |
| MOTS-c 10 mg | $34.79 | 3.48 | 6.10 | -43% |
| GHK-Cu 50 mg | $59.15 | 1.18 | 1.04 | +13% |
| GLP-3 (retatrutide) 10 mg | $121.78 | 12.18 | 8.50 | +43% |
On 10 October 2026 the GLP-3 page listed €149.99 including tax, up from €113.81 in June. We did not re-run the index for this update.
How we scored Particle Peptides
| Subscore | Weight | Score | Main reason |
|---|---|---|---|
| COA quality | 40% | 6.5 | Full archive of 79 reports, 9 checkable on the lab's server; 18 of 74 content figures under 90% of label, mostly older lots; overfills to 141% marked pass; nothing in an independent mirror or on Finnrick |
| Pricing | 25% | 7.4 | Four products 32-43% under our index median per mg; GHK-Cu and GLP-3 over it |
| Shipping | 20% | 6.5 | Published carriers and EU and international ranges; no dispatch time, no US estimate, no order of ours |
| Support | 15% | 6.5 | Named company, street address, phone and hours; returns for defects only; one unverified Reddit warning, Trustpilot profile removed |
The weighted subscores come to 6.7. We take 0.5 off for regulatory exposure: retatrutide sold as "GLP-3", the deduction we applied to Panda Peptides and Hello Stacks. Vendors with an open FDA warning letter lose 1.5; we found none naming Particle. That gives 6.2, or 62/100. The rubric is on our methodology page, and the score recalculates if we complete a first-hand order.
Verdict
Particle publishes more of its lab paperwork than almost any shop we track, bad results included, and its newer Liquilabs lots meet label. None of it is independent, older lots ran short, and retatrutide sits behind a code name. If you buy, check the lot date on the certificate for your vial, use the Liquilabs link where there is one, and expect EU shipping times rather than US ones. A Reddit allegation of fake certificates and underdosing is unverified, and we found no owner overlap between the shop and Liquilabs in the Czech and Slovak registers.
FAQ
Is Particle Peptides legit? It is a registered Slovak company, PARTICLE s.r.o., that publishes its full certificate archive. Older certificates show vials short of label; 2025-26 Liquilabs lots meet it. No independent lab has tested its vials that we know of. A 2 April 2026 Reddit post alleges fake certificates and underdosing; we could not substantiate it. We score it 62/100 on public data; we have not placed an order.
Does Particle Peptides use Janoshik? Not in its own archive. All 79 certificates we mirror come from Apigenex or Liquilabs, and none of its products is in our Janoshik or Kovera mirrors. Liquilabs reports with a public-report link can be checked in our COA verifier.
Does Particle Peptides ship to the US? Its shipping policy gives EU delivery as 2-7 business days and other destinations as 7-21 business days, with no US estimate. Outside the Schengen area the buyer carries the customs risk.
Is particlepeptides.ca the real Particle Peptides? No, according to Particle Peptides. A warning post on its blog names particlepeptides.ca as a fake with no connection to the company, and its only official shop is particlepeptides.com. On 12 October 2026 the .ca site was live as "Particles Peptides Canada" with a Mississauga, Ontario address. We have not verified who runs it, and we link only to particlepeptides.com.
What do Reddit users say about Particle Peptides? Opinion is split and thin. A 2 April 2026 r/Biohackers post alleges injection-site reactions, fake certificates and underdosing; we could not substantiate it, and commenters offered other explanations. Other commenters report months of use without problems. Trustpilot's profile for the shop read as removed on 12 October 2026.
How does Particle Peptides compare on price? In our June 2026 capture, AOD-9604, BPC-157, MOTS-c and TB-500 were 32-43% under our index median per mg; GHK-Cu and GLP-3 were over it. See the peptides index for current numbers.
What we read, and what we did not
We read the shop's homepage, shipping and return policy, payment options page and GLP-3 product page on 10 October 2026, our mirror of its certificate archive (pulled 21 May 2026), our 23 June 2026 price capture and 25 June 2026 pricing index, our Janoshik and Kovera mirrors, Finnrick's vendor page, and a web search for FDA warning letters. On 12 October 2026 we also read its affiliate, company and scam-warning pages, the 2 April 2026 Reddit thread, the Czech register extract for Liquilabs, the Slovak register extract for PARTICLE s.r.o., the RDAP record for the domain and Trustpilot (through a page summarizer).
We did not place an order, open checkout, contact the shop or its labs, or check the nine Liquilabs links against the lab's server for this update; the lab's server returned a 403 to our request on 12 October 2026. The certificate figures are the labs' as published by the shop.
Related
Catalog COA record
VENDOR-PUBLISHED · APIGENEX / LIQUILABS / EUROFINS (HPLC-UV-MS, ICP-MS, MICROBIOLOGY)Aggregated from Particle Peptides's published Certificates of Analysis. Lab work: APIGENEX / Liquilabs / Eurofins (HPLC-UV-MS, ICP-MS, microbiology). Most recent test on file: MAY 2026. Click any compound row to expand the batch-level table.
AOD-96045 BATCHESMEDIAN 99.51%
BPC-1574 BATCHESMEDIAN 97.78%
Bacteriostatic Water1 BATCHMEDIAN —
Bacteriostatic Water (0.9% benzyl alcohol)2 BATCHESMEDIAN —
CJC-1295 with DAC4 BATCHESMEDIAN 97.02%
DSIP2 BATCHESMEDIAN 99.31%
Epithalon4 BATCHESMEDIAN 98.87%
FOXO4-DRI1 BATCHMEDIAN 99.80%
GHK-Cu6 BATCHESMEDIAN 99.80%
GHRP-22 BATCHESMEDIAN 98.81%
GHRP-62 BATCHESMEDIAN 98.70%
Hexarelin1 BATCHMEDIAN 99.20%
Ipamorelin5 BATCHESMEDIAN 99.37%
KPV2 BATCHESMEDIAN 99.47%
LL-371 BATCHMEDIAN 99.80%
MOD GRF (1-29)2 BATCHESMEDIAN 99.80%
MOTS-c3 BATCHESMEDIAN 99.80%
Melanotan 23 BATCHESMEDIAN 99.75%
Modified GRF 1-291 BATCHMEDIAN 98.50%
Modified GRF 1-29 (CJC-1295 no DAC)2 BATCHESMEDIAN 98.72%
PT-1411 BATCHMEDIAN 99.13%
Pinealon1 BATCHMEDIAN 96.35%
Retatrutide4 BATCHESMEDIAN 99.80%
SS-312 BATCHESMEDIAN 99.66%
Selank3 BATCHESMEDIAN 99.80%
Semax2 BATCHESMEDIAN 99.22%
Sodium Chloride 0.9%1 BATCHMEDIAN —
Sterile Water1 BATCHMEDIAN —
Tesamorelin1 BATCHMEDIAN 99.18%
Thymalin1 BATCHMEDIAN 99.80%
Thymosin Alpha 14 BATCHESMEDIAN 98.42%
Thymosin Beta-45 BATCHESMEDIAN 99.10%
Sources
11 REFERENCES- Particle Peptides certificate archive (zip download) — vendor
- Particle Peptides shipping and return policy — vendor
- Particle Peptides payment options — vendor
- Finnrick vendor page, Particle Peptides — Finnrick
- r/Biohackers, WARNING: Avoid ParticlePeptides (2 April 2026) — Reddit
- Czech business register extract, Liquilabs s.r.o. (ICO 22067787, read 12 Oct 2026) — ARES
- Slovak commercial register extract, PARTICLE s. r. o. (read 12 Oct 2026) — Obchodny register SR
- Particle Peptides warning about fake sites and accounts — vendor
- RDAP record, particlepeptides.com (registered 15 Jun 2015) — Verisign RDAP
- Code-name catalogs and FDA evasion — vialaudit
- Why peptide vendors run alias clusters — vialaudit