KP
Zhuhai Kerui Biotechnology Co., Ltd.
Zhuhai · China · est. 2016 · source page added 14 Apr 2024
Buy direct from KP at keruipeptides.com →
Their storefront, not ours. Marked nofollow and sponsored, and nobody here is paid for it.
Zhuhai, established 2016, and the reship policy is the story. Two members have had shipments go missing and both had replacements without a public thread — the behaviour nobody talks about because it works. Purity has been consistently 98% or better across four compounds, and the Zhuhai lanes to Australia are among the fastest anyone here has logged.
- Legal name
- Zhuhai Kerui Biotechnology Co., Ltd.
- Short code
- KP
- Also known as
- KP, KP Biotech, Zhuhai Kerui Biotechnology
- Shop domain
- keruipeptides.com →
- City
- Zhuhai
- Established
- 2016
- Community rating
- 94%
- Independent tests logged
- 4
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
- Reship policy honoured twice with receipts posted both times
- Purity consistently 98%+ across four different compounds
- Zhuhai lanes to Australia are among the fastest in the table
- Ask for the reship policy in writing before you order — they give it plainly and it is the one members have relied on
- Water content is on the certificate for most lots and supplied on request for the rest; ask if your arithmetic depends on it
- Replies are brief rather than chatty; a numbered list of questions comes back as a numbered list of answers
| Date | Service | Compound | Batch | Claimed | Result |
|---|---|---|---|---|---|
| 2026-05-15 | Medutest | Semaglutide 10mg | KP-2605 | 98.5% | 98.7% |
| 2025-12-02 | Janoshik | Tirzepatide 10mg | KP-2512 | 98.5% | 98.9% |
| 2025-06-11 | PeptideMeter | BPC-157 10mg | KP-2506 | 98.0% | 98.5% |
| 2024-10-16 | Janoshik | Semaglutide 5mg | KP-2410 | 98.5% | 98.9% |
| From | To | Carrier | Days |
|---|---|---|---|
| Zhuhai | Australia | DHL | 9–11 |
| Zhuhai | UK | DHL | 8–11 |
- 1[Lab] KP cagri — VendorInvestigate came back 98.1% against a claimed 97.5%c/hplc · 6.6k points · 53 comments
- 2the reship thing finally clicked for me and I want to write it downc/vendorvetting · 5.5k points · 42 comments
- 3how much of what we believe about HPLC actually comes from method development threadsc/hplc · 4.7k points · 38 comments
- 4[Vendor] KP vs BCH on the same compound, same month — both cleared 97.5%c/coa · 3.4k points · 52 comments
- 5genuine question about units that I am slightly embarrassed to askc/reconstitution · 3k points · 27 comments
- 6how much of what we believe about reship actually comes from Janoshik threadsc/vendorvetting · 2.5k points · 52 comments
- 7reading chromatogram threads from 2024 and half of it aged badlyc/hplc · 2.2k points · 52 comments
- 8three years of bacteriostatic water threads, summarised so you do not have to read themc/reconstitution · 2.1k points · 29 comments
- 9[Vendor] KP order #4 — Ireland, 13 days, no drama, receipts insidec/cryptopay · 2.1k points · 59 comments
- 10[PSA] ice pack is not what most of this community thinks it isc/coldchain · 1.7k points · 13 comments
- 11reading order records threads from 2024 and half of it aged badlyc/vendorvetting · 1.6k points · 31 comments
- 12[Discussion] we are measuring Medutest at the wrong time and calling it noisec/vendorvetting · 1.6k points · 40 comments
reordered at 20 months to check for drift. 96.9% then, 96.9% now. mass variation across the box was under 2%.
weighed 3 vials against label out of curiosity. all within 2%. fill consistency is underrated. not sponsored, not affiliated, just kept the receipts.
certificate for lot KP-26-498 was complete first time. no email chain. no "we will look into it".
3 orders, 10 months, no substitutions and nothing quietly swapped after payment. they gave the storage condition the stability statement was written against without being asked.
they told me about a 2 day delay before it happened. before. that is the bar and almost nobody clears it. defaulting to them until something changes.
the analysis date on the certificate was three weeks before dispatch. lot KP-26-641 was fine on test and the trace was clean at the baseline. solid. that is it.
their certificate has water content by Karl Fischer. I did not expect that and I am not over it. solid. that is it. solid.
the related substances table is itemised. actual named impurities. not "total 0.4%" and a shrug. invoice and vial and cert all agree on the lot. no notes.
ordered MOTS-c 10 mg, sent it to VendorInvestigate, came back 98.4% on a stated 98.3%. good enough for me. happy. moving on.
cold pack was still solid on arrival day 4. in Germany. in summer. boring supplier. highest compliment I have.
ordered cagrilintide 5 mg, and the lot code on the vial matched the paperwork exactly. lot KP-26-336 came back 99.0% on a stated 98.5%. this is one order, not a dataset.
bought DSIP 5 mg expecting to have a complaint. do not have one. annoying.
shipped out of Poland, landed day 6. no customs, no waiting, no chasing. mass variation across the box was under 2%. n=1 and I am saying so.
quoted 5 days. arrived 5 days. this is the whole review. if the next one holds I will stop testing every lot.
first order was small on purpose. Janoshik said 97.6%. second order was not small. genuinely nothing to complain about.
sent one to Janoshik and one to VendorInvestigate because I did not believe the first result. both agreed. fine, I believe it. stated purity and independent purity landed a tenth apart. would buy again. have bought again.
stock said in stock. it was actually in stock. shipped same day. wild. they flagged the delay in advance instead of after. solid. that is it. solid.
6th order, zero drama. that is genuinely all I have to say. research use only, obviously.
they will quote lines nobody else will even respond about, and it came back clean. mass variation across the box was under 2%.
asked about counter-ion and got acetate vs TFA answered properly instead of being ignored. peptide content 97.7% so converting to a working mass was trivial. paperwork is half of what you are paying for.
support replied on a sunday with the batch record attached. on a sunday.
the related substances table is itemised rather than a single total. support answered on the same working day with the document attached. would buy again. have bought again.
reconstituted the IGF-1 LR3 1 mg and it went clear instantly. no haze. you can tell straight away when it has been done properly. no mannitol surprise, cake intact, not collapsed.
split the order across two lots to compare. came back within 0.1 of each other. gradient and column are both printed so you could reproduce it. boring supplier. highest compliment I have.
the cold element was still solid on arrival, in July. the reorder was identical to the first order in every respect I could check. defaulting to them until something changes.
packing was the desiccant sachet actually inside the secondary container. someone in that warehouse cares. test your own vial regardless. always.
Zhuhai Kerui Biotechnology Co., Ltd. sells from its own storefront. Read what they say about themselves against the log above, then decide.
Go to the KP store — keruipeptides.com →
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.