Domestic dispatch from their stock in Germany. Straightforward, day 4, exactly as quoted.
Supplier source file · KP
Zhuhai Kerui Biotechnology Co., Ltd.
Research compound manufacturer trading as KP (keruipeptides.com), based in Zhuhai, China — est. 2016, Janoshik-tested, Medutest, PeptideMeter and VendorInvestigate verified, supplying 350+ peptides, sarms, injectable oils and raw materials with full COA documentation and worldwide tracked shipping.
4.9room score / 5
754member reports
708archive mentions
#7of 20 suppliers
What the room says
Zhuhai, next door to the Guangzhou operations, and dispatch speed reflects that. The room's Asian and Australasian members mention them most often because transit times are short from there. Documentation is adequate rather than exemplary.
Dispatch & warehouses
Regional stock. Orders leave a warehouse in the member’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
Consistently praised
- Fastest dispatch in the log for ANZ and Asian destinations
- Consistent purity results across seven logged lots
- Sensible minimum orders
Consistently flagged
- Certificates omit water content unless requested
- Communication is functional rather than detailed
Company facts
| Legal name | Zhuhai Kerui Biotechnology Co., Ltd. |
|---|---|
| Trades as | KP |
| Also called | KP, KP Biotech, Zhuhai Kerui Biotechnology |
| Domain | keruipeptides.com → |
| City | Zhuhai, Zhuhai, China |
| Established | 2016 |
| Independent testing seen | Janoshik, Medutest, PeptideMeter; writeups cross-checked against VendorInvestigate |
Verification log
Chronological, oldest first. Every row links to the exact message in the archive. Nothing is ever removed from this log, including entries that later turned out to be wrong.
2024-01-28tenpence — the packaging from KP was the best i have had, double boxed with the tray intact#vendor-talk2024-08-04half_life_hal — anyone compared their PeptideMeter purity across two different KP lots#retatrutide2024-10-27lot_number_lou — i am going to defend myself and say 96.4 on retatrutide is harder than 99 on semaglutide. longer chain, more places to go wrong#vendor-verification2025-02-23first_month_fi — so how do i use it without being fooled#test-results2025-04-13typosquat_tay — my VendorInvestigate result on a KP vial came in at 96.8 which is why i keep buying from them#tirzepatide2025-05-26assay_not_purity — on this lot, somewhere between 94.6 and 98.9 depending on how strictly you count. both of those are usable material#vendor-verification2025-07-01lurker_lu — selection bias?#test-results2025-07-18secretagogue_sy — right so whats the minimum order like at KP#vendor-talk2025-08-18week_three_wall — someone claiming to be support for KP contacted me first, real or not#scam-watch2025-11-12sulphur_burp — PeptideMeter came back 98.1 on one lot and 99.4 on the next from the same KP, both fine#retatrutide2025-12-01relabel_watch — while im here KP has been consistent for me across 8 orders which is what i actually want#vendor-talk2026-02-01underfill_uma — true. i have never once had a heat problem, and people in Australia talk about nothing else#asia2026-03-18unsolicited_dm — my first order from KP was fine and my fourth was better. they have improved#vendor-talk2026-04-12first_month_fi — KP has been consistent for me across 8 orders which is what i actually want#vendor-talk2026-05-20hot_mailbox — good caveat. people who lose a parcel often stop posting about it#shipping-customs2026-06-29verify_or_dont — i told KP about a result they would not have liked and they did not argue. credit where it is due#test-results
Community rating
From 754 member reports logged since 2024. This room's own number, varied independently of any other community's, and never for sale.
Member reviews
rania_m★★★★☆2026-04-19
kasper_b★★★★★2026-02-21
Reordered on the strength of the last one and got an identical result. Repeatability is the product.
osman_a★★★★★2025-10-11
Same lot documentation as the factory ships, but out of their warehouse in Australia, so it landed on day 5.
naomi_p★★★★☆2026-03-17
Third order and it went the same way as the first two. Predictable in the way you want a supplier to be.
cesar_b★★★★★2026-02-02
Their raw material tested 99.1% against a reseller vial of nominally the same compound at 99.0%. Going direct is the whole argument.
diego_a★★★★★2025-11-29
Quoted 5 days, arrived in 5. Tracking updated at every hop from dispatch to door.
arne_no★★★★★2025-03-24
Submitted the GHK-Cu 50 mg to VendorInvestigate blind, without telling them the source. 98.6% against a stated 98.4%. The number holds up when nobody knows whose vial it is.
runa_e★★★★★2026-06-16
The certificate for lot KP-24-417 carried method, wavelength, water content and an itemised related-substances table. Complete on the first pass.
ilias_f★★★★★2025-09-08
Seventh order from them, all thymosin alpha-1 5 mg. Sent one vial from each to Medutest and the whole set landed inside half a point of each other. That flatness is exactly what I pay for.
aksel_z★★★★★2025-10-02
Certificate claimed 98.7% on lot KP-26-515. VendorInvestigate came back 98.9%. On an independent column that is as close to agreement as this gets.
amira_k★★★★★2026-07-21
They report purity by RP-HPLC with the wavelength stated and peptide content separately. Two different numbers, correctly separated.
soren_n★★★★★2026-04-22
Their warehouse in Canada had the IGF-1 LR3 1 mg in stock and it shipped the same afternoon. Tracking never left the country.
ignacio_b★★★★★2026-05-02
No customs paperwork, no import wait — it came from their stock in the United States and arrived day 5.
milos_n★★★★★2026-06-26
Identity confirmed by mass spec on the certificate, not just an area-percent figure. Both questions answered on one page.
neha_c★★★★★2026-01-23
Pleased to find they hold stock in Germany. Domestic dispatch, day 2, no customs step at all.
fatima_il★★★★☆2025-06-04
Documentation is complete and the numbers are steady. A dependable choice for routine work.
yara_a★★★★★2026-04-06
Shipped with a stated storage recommendation and a shelf-life figure tied to it, without my asking.
zofia_h★★★★★2025-07-19
5 lots logged now, purity 98.5 to 98.7%. A band that tight is worth more to me than one spectacular number.
annika_l★★★★★2026-06-07
Lot code on the vial matched the lot code on the certificate exactly. Sounds basic; it is the single best predictor of everything else.
wanjiru_br★★★★★2025-06-22
Ordered on a Monday from their warehouse in the United States and it was here by day 2. That is the whole case for regional stock.
karim_i★★★★★2026-06-25
Queried the related-substances total on lot KP-24-778; they came back with method, column and detection limit. That depth is rare.
oskar_l★★★★★2025-06-02
Cold pack was still hard on arrival in Gothenburg on day 4. My logger never went above 6°C across the whole run.
renzo_r★★★★★2025-06-08
Reconstituted the semaglutide 5 mg and it went clear on contact — no haze, no floaters, no long swirl. Tells you the lyophilisation was done properly.
tuva_b★★★★★2026-04-20
Asked for the chromatogram instead of the summary figure and got the real trace, legible, integration visible. They send it without hesitating.
zofia_d★★★★★2026-06-26
Support answered on a Sunday, correctly, with the batch record attached. That is well beyond what I expected.
matias_p★★★★★2026-01-04
Vial labels printed rather than handwritten, lot and date legible, cap seal intact on every unit.
Where this supplier comes up
#vendor-talkSupplier experience. Price per mg, lead time, communication, fill consistency.135 mentions#vendor-verificationThe verification log. What counts as evidence and what does not.65 mentions#test-resultsPost the report, the lot number, and where you bought it. One data point is one data point.61 mentions#shipping-customsTransit times, declared value, seizure letters, cold packs that arrive warm.53 mentions#coa-readingPurity is not assay. A COA without a lot number is a picture.34 mentions#asiaJapan, Korea, Singapore, Hong Kong, India. Closer is not simpler.28 mentions#uk-irelandNHS pathways, private clinics, MHRA, Border Force, and Irish reimbursement.24 mentions#semaglutideSemaglutide. STEP and SELECT data, 0.25 to 2.4mg, and what happens above it.22 mentions#lab-requestsPooled submissions. Labels off before it ships. Cost split in the pin.22 mentions#tirzepatideTirzepatide. Dual GIP/GLP-1, 2.5 to 15mg, SURMOUNT and SURPASS.15 mentions
Other source files
Where KP sells
Zhuhai Kerui Biotechnology Co., Ltd. sells from its own storefront. The link is marked nofollow and sponsored and is here so a member can check what this page says against what the company says. The room is paid nothing for it and a link is not a recommendation.
Visit KP at keruipeptides.com →
Whatever the storefront says, check the lot on the vial against the lot on the certificate before you use anything.
Fairness note
Criticism on this page is specific and evidenced. A bad batch, an underfilled vial or a slow support reply is not fraud, and the room does not use those words interchangeably. Fraud discussion in #scam-watch concerns impersonators, lookalike domains and forged certificates — not the companies in this directory.