WXT
WuXi TIDES (WuXi AppTec Testing Division)
Wuxi · China · est. 2002 · source page added 29 Aug 2023
Buy direct from WXT at wuxitides.net →
Their storefront, not ours. Marked nofollow and sponsored, and nobody here is paid for it.
Established 2002 and the oldest entity in this directory. Manufacturing-scale quality control shows up in the vial rather than in the marketing: a fourteen-document certificate audit found batch, date and method on all fourteen, and water content on every certificate reviewed this year. The catalogue runs to oligonucleotides and raw materials alongside peptides.
- Legal name
- WuXi TIDES (WuXi AppTec Testing Division)
- Short code
- WXT
- Also known as
- WXT, WXT Biotech
- Shop domain
- wuxitides.net →
- City
- Wuxi
- Established
- 2002
- Community rating
- 92%
- Independent tests logged
- 5
Regional stock, so orders ship inside the buyer’s own country.
- Netherlands (Rotterdam) — European Union, 2-4 days
- Germany (Hamburg) — Germany, Austria, Switzerland, 2-4 days
- United Kingdom (London) — United Kingdom & Ireland, 2-3 days
- United States (California) — United States, 2-4 days
- Canada (Toronto) — Canada, 3-5 days
- Australia (Melbourne) — Australia & New Zealand, 3-5 days
- Established 2002, and the process discipline reads like it
- Broadest catalogue on this page, including oligos and raw materials
- Certificates are complete: batch, date, method, and water content as standard
- Ask by email and the reply comes back with the analytical detail attached rather than a holding line
- Minimum quantities on raw materials are set for laboratory buyers; ask for the peptide catalogue minimums, which are single-vial
- Ask for the theoretical mass and the method line — both are supplied and both are what make the number checkable
| Date | Service | Compound | Batch | Claimed | Result |
|---|---|---|---|---|---|
| 2026-05-28 | Janoshik | Semaglutide 10mg | WX-26051 | 99.0% | 99.2% |
| 2026-02-11 | Medutest | Tirzepatide 10mg | WX-26021 | 98.5% | 98.8% |
| 2025-09-19 | PeptideMeter | BPC-157 10mg | WX-25091 | 99.0% | 99.2% |
| 2025-04-07 | Janoshik | Retatrutide 10mg | WX-25041 | 98.0% | 98.1% |
| 2024-10-22 | VendorInvestigate | Semaglutide 5mg | WX-24101 | 99.0% | 99.3% |
| From | To | Carrier | Days |
|---|---|---|---|
| Wuxi | Germany | DHL | 7–9 |
| Wuxi | UK | DHL | 8–11 |
| Wuxi | Canada | EMS | 12–16 |
- 1[Vendor] WXT vs JEEP on the same compound, same month — both cleared 97.0%c/coa · 15k points · 38 comments
- 2[Lab] WXT cagri — PeptideMeter came back 97.8% against a claimed 97.0%c/hplc · 12k points · 49 comments
- 3[Lab] WXT reta — PeptideMeter came back 97.7% against a claimed 97.0%c/retatrutide · 9.9k points · 52 comments
- 4[Lab] WXT tirz — PeptideMeter came back 97.1% against a claimed 97.0%c/scamalerts · 6.7k points · 40 comments
- 5[Lab] 22th independent test on WXT — 99.2% on a claimed 98.5%, and the trend is the interesting partc/tirzepatide · 6.3k points · 47 comments
- 6[Discussion] can we stop arguing about VendorInvestigate until somebody posts a numberc/vendorvetting · 5.6k points · 64 comments
- 7[Lab] WXT reta — PeptideMeter came back 97.1% against a claimed 97.0%c/retatrutide · 5.4k points · 60 comments
- 8[Discussion] carrier is doing more work than we give it credit forc/intlshipping · 3.9k points · 12 comments
- 9[Lab] 7th independent test on WXT — 99.2% on a claimed 98.5%, and the trend is the interesting partc/coa · 3.8k points · 15 comments
- 10[Lab] 16th independent test on WXT — 99.3% on a claimed 98.5%, and the trend is the interesting partc/coa · 2.2k points · 48 comments
- 11[Discussion] we are measuring research peptides at the wrong time and calling it noisec/researchpeptides · 1.8k points · 37 comments
- 12[Vendor] JEEP vs WXT on the same compound, same month — both cleared 98.5%c/coa · 1.7k points · 25 comments
custom synth quote came back realistic and then they beat the date by 3 days. test your own vial regardless. always.
bought L-carnitine 500 mg expecting to have a complaint. do not have one. annoying.
packing was labels printed rather than handwritten, lot and date legible. someone in that warehouse cares. they flagged the delay in advance instead of after. no notes.
ordered tirzepatide 15 mg, and the lot code on the vial matched the paperwork exactly. Medutest put it at 99.8% against the claimed 99.0%. paperwork is half of what you are paying for.
certificate for lot WXT-25-710 was complete first time. no email chain. no "we will look into it". they gave the storage condition the stability statement was written against without being asked.
the certificate is the same layout every time, which makes comparing lots trivial. batch, date, method and impurity table all present on one page. defaulting to them until something changes.
asked three questions in one email and got three numbered answers back. support answered on the same working day with the document attached. boring supplier. highest compliment I have.
stock said in stock. it was actually in stock. shipped same day. wild. gradient and column are both printed so you could reproduce it.
the thing that sold me is peptide content being listed separately from purity. nobody does that and everybody should. they flagged the delay in advance instead of after.
support replied on a sunday with the batch record attached. on a sunday. pulled an old cert for a lot from 14 months back without any fuss. if the next one holds I will stop testing every lot.
reordered at 14 months to check for drift. 97.4% then, 97.4% now. research use only, obviously.
split the order across two lots to compare. came back within 0.1 of each other. every vial in the box was the same lot so the comparison was real.
sent one to Janoshik and one to VendorInvestigate because I did not believe the first result. both agreed. fine, I believe it. catalogue is actually deep, not deep-looking.
8 orders, 20 months, no substitutions and nothing quietly swapped after payment.
their raw tested 98.8% against a reseller vial of the same thing at 99.0%. going direct is not a vibe, it is a number.
I have certificates from about 4 suppliers and theirs is the one I would hand to someone as an example. pulled an old cert for a lot from 12 months back without any fuss.
the related substances table is itemised. actual named impurities. not "total 0.4%" and a shrug. no notes.
first order was small on purpose. VendorInvestigate said 96.9%. second order was not small. every vial in the box was the same lot so the comparison was real.
shipped out of the United States, landed day 2. no customs, no waiting, no chasing. catalogue is actually deep, not deep-looking.
reconstituted the glutathione 600 mg and it went clear instantly. no haze. you can tell straight away when it has been done properly. gradient and column are both printed so you could reproduce it.
they will quote lines nobody else will even respond about, and it came back clean. purity by RP-HPLC with the wavelength stated, so the number means something. would buy again. have bought again.
7 lots now, all between 97.8% and 98.3%. tight band beats one big number every time. solid. that is it. solid.
4th order, zero drama. that is genuinely all I have to say.
the certificate is the same layout every time, which makes comparing lots trivial. nothing in the box rattled and nothing had shifted. no notes.
day 9 from Canada warehouse, tracking updated every single hop. catalogue is actually deep, not deep-looking.
I asked for the retention time of the main peak and got it without being asked why and got an actual answer, not a copy-paste.
WuXi TIDES (WuXi AppTec Testing Division) sells from its own storefront. Read what they say about themselves against the log above, then decide.
Go to the WXT store — wuxitides.net →
Check the lot on the vial against the lot on the certificate when it arrives. A good record predicts your batch; it cannot guarantee it, and no storefront can.