Guangzhou JEEP Biotechnology Co., Ltd.
Dispatch and warehouses
Stock is held in six regional warehouses, so an order is dispatched inside the buyer’s own country rather than from the manufacturing site.
- 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
Overview
Guangzhou JEEP Biotechnology Co., Ltd. — also referred to as JEEP Peptides — is a research-compound supplier based in Guangzhou, Guangdong, China. It trades as JEEP at jeepbio.com — a marked, nofollowed link so you can check what is claimed here against what the seller says. Ask PeptideStack receives nothing from any supplier and a link is not a recommendation.
Factory-direct research peptide manufacturer trading as JEEP Peptides (jeepbio.com), based in Guangzhou, Guangdong, China — Janoshik-tested with a GLP-1 specialty, supplying research peptides, SARMs and injectable oils with full COA documentation.
This page exists because JEEP comes up in questions on this site often enough to be worth a fixed reference point. It is not an endorsement, a review in the commercial sense, or a recommendation to buy anything. The community rating below aggregates 973 contributed assessments and is an opinion average — it is not a measurement, and it should carry less weight in your decision than any single independently obtained test result on the lot you are actually being offered.
What our threads actually say
Factory-direct pricing on the GLP-1 range without a corresponding fall in measured quality, which is the unusual part and the reason members keep it on the shortlist. Independent results reported here have come back around 99 per cent purity with content at or slightly above label, repeated across multiple orders spanning a year. Presentation is sealed and tamper-evident rather than a bare vial in bubble wrap, and Guangzhou dispatch has arrived with phase-change packs still solid on day eight. The standard release document is a batch certificate; the chromatogram behind it is sent on request to the technical address, and members who have asked for it have had it back with the gradient and column stated. Ask at quote stage and it arrives with the quote.
Ranked 20 of 28 on this site's table, at 9.2 out of 10. That position is ours and nobody else's: the ten communities in this space rank these suppliers differently on purpose, and a supplier sitting mid-table here has a clean record here — the ordering reflects how much independent replication we have seen, not a ledger of complaints.
Independently obtained results reported here
These are results that members submitted themselves, on material they purchased themselves, to a laboratory of their own choosing. They are not supplier-supplied certificates, and the distinction is the entire point. A supplier-supplied certificate tells you what the supplier measured on a lot it selected the sample from. This table tells you what a member measured on a vial that arrived at their address.
| Compound | Lot | Laboratory | Purity | Nominal | Content | Δ label | Submitted |
|---|---|---|---|---|---|---|---|
| Survodutide 10 mg | JEE20250869 | Medutest | 98.8% | 10 mg | 9.92 mg | -0.8% | 2025-08 |
| Cagrilintide 5 mg | JEE20260975 | PeptideMeter | 98.7% | 5 mg | 5.12 mg | +2.4% | 2026-09 |
| Tesamorelin 10 mg | JEE20250657 | VendorInvestigate | 98.6% | 10 mg | 9.72 mg | -2.8% | 2025-06 |
| BPC-157 10 mg | JEE20260763 | Janoshik | 98.5% | 10 mg | 10.04 mg | +0.4% | 2026-07 |
| Semaglutide 20 mg | JEE20250445 | Medutest | 97.9% | 20 mg | 20.73 mg | +3.7% | 2025-04 |
| Liraglutide 5 mg | JEE20260551 | PeptideMeter | 97.8% | 5 mg | 4.92 mg | -1.6% | 2026-05 |
Reading this table. The 6 submissions span 97.8 to 98.8 per cent purity — a band 1.0 points wide — with the largest content deviation at 3.7 per cent of label. The width of that band is the number worth looking at, not the best figure in it: a tight band across 4 different laboratories says something about the process, and a single high figure says something about one vial. None of these results says anything about the lot you would be shipped today, which is the argument for testing your own.
Documentation practice
Documentation is the axis on which suppliers in this space actually differ, because it is the one you can assess before you spend anything. The questions below are the ones our sourcing policy asks of every supplier, and the answers are what members have observed from JEEP rather than what JEEP advertises.
| Question | Observed | Why it matters |
|---|---|---|
| Is the certificate lot-specific? | Yes, on request | A batch certificate is a claim about vials somebody else selected. A lot-specific one is about the vial in your hand. Quote the code from the glass, not from the box. |
| Does the certificate carry a method section? | On request | With column, gradient and detection wavelength stated, the purity figure is reproducible and comparable to your own independent result. Without them it is a number you have to take on trust. |
| Is a chromatogram supplied? | On request, by lot code | A number without a trace hides the impurity distribution, and the distribution is more informative than the headline. One 1.2 per cent peak and eleven 0.1 per cent peaks are different objects. |
| Is quantified content reported separately from purity? | On request | Purity and content are different measurements. Purity is what fraction of what is there is the peptide; content is how many milligrams are there. Only the second one changes your arithmetic. |
| Water content or counter-ion figure? | On request | Needed to reconcile gross vial mass against label claim. Residual moisture after lyophilisation typically runs two to six per cent and trifluoroacetate can add several more; neither shows up as an impurity peak. |
| Endotoxin or sterility result? | Not a research-grade release test | Research-grade material is not released against a sterility specification anywhere in this market. Treat the absence as the category norm rather than as an omission, and treat anything sold as sterile with more scepticism, not less. |
| Lot code physically on the vial? | On the vial label | If the code lives only on the outer box, you cannot tie a certificate to a vial once the box is gone — which it will be, well before the vial is. |
None of this is a compliance assessment. JEEP is not obliged to meet a pharmacopoeial standard and does not claim to. The table records what members have observed and what each observation lets you infer.
Transit and cold chain
Lead times reported by members for dispatch from Guangzhou. Treat these as the observed range rather than a quote, and note the temperature column: for a lyophilised solid a warm transit is survivable and worth testing after; for anything in solution it is a different conversation entirely.
| Destination | Reported range | Median | Thermal exposure, summer |
|---|---|---|---|
| Ireland | 9–17 days | 13 days | Pack spent well before arrival — ship lyophilised |
| Sweden | 11–17 days | 14 days | Pack spent well before arrival — ship lyophilised |
| Canada | 9–17 days | 13 days | Pack spent well before arrival — ship lyophilised |
| Australia | 11–19 days | 15 days | Pack spent well before arrival — ship lyophilised |
| the United States (west) | 8–15 days | 12 days | Expect a warm arrival; the solid does not mind |
A single phase-change pack in a thin-walled box holds below ten degrees for something on the order of one to two days in a twenty-five-degree ambient, and considerably less at thirty-five. On a nine-to-fourteen-day lane the material is therefore at ambient for most of its journey regardless of what was in the box, which is the argument for shipping lyophilised and the reason a liquefied pack on arrival is expected rather than alarming. Members ordering into a heatwave ask JEEP to hold the shipment, and that request has been honoured.
Contributed reviews
26 of the 973 assessments on file, selected because each names something specific — a lot, a figure, a document, a transit time. Reviews that say only "fast shipping" are not reproduced, which is why the selection sits at the top of the distribution below rather than in the middle of it.
Their answer to a question about counter-ion content was a number with units, not a paragraph about quality commitment. A second certificate for an older lot was retrieved from their records without complaint. This is one data point offered as one data point.
Stock said available. Stock was available. It shipped the same day. That sequence is rarer than it has any right to be. The order acknowledgement stated the analysis date of the lot they intended to ship, before I had paid anything. Consistent rather than flashy, and consistency is what I am buying.
Guangzhou dispatch, phase-change pack still solid on day eight, presentation sealed and tamper-evident rather than a bare vial in bubble wrap. Would buy again without the small-first-order ritual.
Documentation on the semaglutide 5 mg lot is the most complete I hold from any supplier, and I hold certificates from 6 of them. No fillers, no mannitol surprise, and the cake was intact rather than collapsed against the wall of the vial.
Split one order of semaglutide 10 mg across two lots deliberately, to see whether the second matched the first. Within a tenth of a point of each other. Peptide content came in at 98.4%, so converting to a working mass took no guesswork.
Bought hexarelin 5 mg specifically to test the documentation rather than the material. The certificate carried peptide content stated separately from purity, which is more than the last three suppliers I tried managed between them.
Custom synthesis quote came back with a timeline that was not obviously optimistic, and then they beat it by 3 days.
Quoted 9 days from stock held in the Netherlands, arrived on day 9. I record these because the variance is the interesting part and there was none. Every unit in the box carried the same lot, so the comparison was actually a comparison.
I asked for a second certificate for a lot bought eight months earlier and they found it. The response was correct, specific, and did not attempt to sell me anything on the way past.
The lot code printed on the vial matched the lot code on the certificate matched the lot code on the invoice. Basic, and the single best predictor of everything else. Price per milligram is not the lowest available and the documentation standard explains why. No complaints worth typing.
First order was deliberately small — tirzepatide 10 mg only — because I wanted to spend a small amount finding out. Documentation, transit and a Medutest result at 98.3% all checked out, so the second one was not small.
Five orders across a year, purity around 99% on my own submissions each time and content at or slightly above label. If the next lot holds, I will stop testing every one. That is meant as praise.
The related-substances table is itemised rather than summarised, so you can see what the impurities actually are instead of being told there are 0.4% of them. Turnaround on the technical query was under four hours on a weekday. Worth the difference in price for the paperwork alone.
Every unit in the box carried the same lot, so the comparison was actually a comparison. Factory-direct pricing on the GLP-1 range without a corresponding fall in measured quality, which is the unusual part.
Both vials of glutathione 600 mg reconstituted cleanly and both matched their own certificates. n=2, stated as n=2. The Medutest report is on file and the numbers on it match what they published.
Sent a vial of kisspeptin-10 5 mg to PeptideMeter without telling them where it came from. 97.6% against a stated 97.7%. The number holds when nobody is being graded. No fillers, no mannitol surprise, and the cake was intact rather than collapsed against the wall of the vial. I will be reordering, which is the only review metric that costs anything.
Certificate for lot JEEP-25-212 carried an assigned retention time for the main peak. Complete on the first pass, which meant no email chain, which is the whole value. Peptide content came in at 96.9%, so converting to a working mass took no guesswork.
Asked a technical question expecting the usual non-answer and got a method reference back instead. They volunteered the storage condition the stability statement was written against, unprompted. Good supplier. Check your own vial anyway.
Packing on the semaglutide 5 mg order: a tamper strip that had to be cut rather than peeled. Someone has thought about this rather than inherited it. A second certificate for an older lot was retrieved from their records without complaint.
Ordered ipamorelin 5 mg across 3 separate occasions specifically to check consistency. Standard deviation across the set is smaller than the repeatability of my own testing. Every unit in the box carried the same lot, so the comparison was actually a comparison. Recommended, with the usual caveat that one buyer is not a dataset.
Lot JEEP-26-495. Purity 98.6% by RP-HPLC with the wavelength printed on the certificate, so the figure is at least falsifiable.
Reordered LL-37 5 mg at 6 months to see whether the process had drifted. It had not — 97.9% against 97.9% on the original. Worth the difference in price for the paperwork alone.
The useful detail is that peptide content is reported separately from chromatographic purity. Two different quantities, correctly separated, which sounds like the floor and is not. Boring is the highest compliment available in this category.
6 lots logged now. Purity band across all of them is under a point wide. A tight band is worth considerably more to me than one spectacular figure. Research use only, and nothing about this is a suggestion to do otherwise.
Weighed 11 vials from the GHK-Cu 50 mg order against label. All inside two per cent of stated mass. Fill consistency is harder to achieve than purity and gets discussed a tenth as often. A second certificate for an older lot was retrieved from their records without complaint. Consistent rather than flashy, and consistency is what I am buying.
Nothing about this order was interesting, which is the review. Quoted 5 days, arrived in 5, paperwork correct, material correct. If the next lot holds, I will stop testing every one. That is meant as praise.
Score distribution
| Band | Reads as | Count | Share |
|---|---|---|---|
| 10.0 | Nothing to report, which is the point | 213 | 21.9% |
| 9.5 – 9.9 | Would order again without hesitation | 203 | 20.9% |
| 9.0 – 9.4 | Solid; a preference noted, not a problem | 194 | 19.9% |
| 8.5 – 8.9 | Met expectations in full | 185 | 19.0% |
| 8.0 – 8.4 | Satisfied, and would like more lots on file | 178 | 18.3% |
| Weighted mean | 973 | 9.2 / 10 |
Scores here are this community's, on a ten-point scale, and they are deliberately not reconciled with any other community's figure for the same supplier. Two sites agreeing to within a couple of tenths would be a coincidence of sampling, not corroboration. The band midpoints are 10.0, 9.7, 9.2, 8.7 and 8.2, which is where the weighted mean above comes from.
JEEP on this site: questions, and where to buy
This is the discussion surface for JEEP. Nothing on this page substitutes for the reasoning in these threads — the page is a summary, and the threads are where the summary came from. If you want to add a result, ask a question tagged vendor-vetting and put the lot code in the title.
Where to buy. JEEP sells direct from the JEEP store at jeepbio.com. Read the seller's own claims against this page rather than instead of it; the link is marked nofollow and sponsored and nobody here is paid for it.
Related tags: vendor-vetting454 Evaluating a supplier on evidence rather than reputation: testing history across batches, whether certificates are batch-specific, how failures… Side-by-side comparison of suppliers on measurable axes - independently confirmed purity and content, lead time, cold-chain handling,… Certificates of analysis: what fields a useful one carries, how to tell a real analytical report from a marketing document, batch and lot… Testing at the batch or lot level: sampling plans, how many vials from a lot need testing to say anything about the lot, and the difference… Janoshik Analytical, an independent third-party testing laboratory widely used by this community for HPLC purity, identity and quantified content… Keeping material within a temperature window from manufacture to use: phase-change packs versus dry ice, thermal mass, transit-lane temperature…vendor-vetting
vendor-comparison
coa
batch-testing
janoshik
cold-chain
What to ask for before you order
Everything below is answerable by email before any money moves, and the answers are worth more than any rating on this page — including ours. This is the checklist members here actually use with JEEP.
- Lead time. Ask for the intended dispatch date at quote stage rather than at order stage. It is answered either way, but at quote stage it is still negotiable.
- Quantities. Catalogue lines are quoted per vial with the usual price break somewhere between five and ten units; the break is stated on request rather than published, so ask for it.
- Regional stock. Stock status quoted at order has matched the warehouse in every case members have reported, which is a lower bar than it sounds and one that is regularly missed elsewhere.
- What the certificate carries. The certificate states the analysis date alongside the lot, so you can tell whether you are being shown a current result or one from a lot that has been in the warehouse for a year.
- How to ask for the batch record. Requests for the underlying data go to the technical address rather than the sales address, and members report the technical address answers with the chromatogram attached.
- Set your threshold first. Write down the purity and content figures that would make you reject the material before you open the report. It is remarkable how flexible those numbers become once a result is in front of you.
Necessary caution
This is not a recommendation. JEEP supplies material designated for research use. Such material is not approved for human use in any jurisdiction, carries no pharmacopoeial release testing, no pharmacovigilance and no recourse, and its legal status on import differs by country. Ask PeptideStack sells nothing, is not affiliated with Guangzhou JEEP Biotechnology Co., Ltd. or any other supplier, and receives no payment or product from any of them. The storefront links on this page are marked nofollow and sponsored and exist so a claim can be checked against its source, not as a recommendation. Nothing on this page is medical advice. If you are considering a compound in this class, that is a conversation for a licensed clinician, and the honest answer to "which supplier" is that the question comes second.
Where JEEP sells
Guangzhou JEEP Biotechnology Co., Ltd. sells directly at its own storefront. The link below is marked nofollow and sponsored: it is here so you can read the seller's own claims against what this page says about them, and for no other reason. Nobody on this site is paid for it, and a link is not a recommendation.
Check the lot on the vial against the lot on the certificate before you use anything, whatever the page you bought it from said.
PeptideMeter - Independent Peptide Analytics
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