Hubei Jianxiang Bioscience 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
Hubei Jianxiang Bioscience Co., Ltd. — also referred to as HJ, HJ Biotech — is a research-compound supplier based in Xianning, China, established 2015. It trades as HJ at hubeijianxiang.net — 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.
Research compound manufacturer trading as HJ (hubeijianxiang.net), based in Xianning, China — est. 2015, Janoshik-tested, Medutest, PeptideMeter and VendorInvestigate verified, supplying 350+ peptides, sarms, injectable oils and raw materials with full COA documentation and worldwide tracked shipping.
This page exists because HJ 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 661 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
Unglamorous and straightforward, which several members treat as a compliment and intend as one. The distinguishing behaviour is that a lot-specific certificate is supplied on request before ordering, with the lot number matching what eventually ships — a test that costs the person asking nothing and that a large fraction of suppliers anywhere fail. Purity results reported here sit in the high 97s to low 98s with a tight band across lots. Xianning dispatch adds a short inland leg that members have found faster than the geography suggests.
Ranked 13 of 28 on this site's table, at 9.4 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 |
|---|---|---|---|---|---|---|---|
| Semaglutide 20 mg | HJ20250851 | Medutest | 98.0% | 20 mg | 20.22 mg | +1.1% | 2025-08 |
| Liraglutide 5 mg | HJ20260957 | PeptideMeter | 98.1% | 5 mg | 4.85 mg | -3.0% | 2026-09 |
| Semaglutide 5 mg | HJ20250639 | VendorInvestigate | 98.2% | 5 mg | 4.98 mg | -0.4% | 2025-06 |
| Tirzepatide 30 mg | HJ20260745 | Janoshik | 98.3% | 30 mg | 30.64 mg | +2.1% | 2026-07 |
| Survodutide 10 mg | HJ20251275 | Medutest | 98.4% | 10 mg | 9.75 mg | -2.5% | 2025-12 |
Reading this table. The 5 submissions span 98.0 to 98.4 per cent purity — a band 0.4 points wide — with the largest content deviation at 3.0 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 HJ rather than what HJ advertises.
| Question | Observed | Why it matters |
|---|---|---|
| Is the certificate lot-specific? | Yes | 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? | Yes | 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. HJ 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 Xianning. 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 | 9–15 days | 12 days | Expect a warm arrival; the solid does not mind |
| Sweden | 11–18 days | 15 days | Pack spent well before arrival — ship lyophilised |
| Canada | 9–18 days | 14 days | Pack spent well before arrival — ship lyophilised |
| Australia | 11–20 days | 16 days | Pack spent well before arrival — ship lyophilised |
| the United Kingdom | 8–16 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 HJ to hold the shipment, and that request has been honoured.
Contributed reviews
26 of the 661 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.
Nothing about this order was interesting, which is the review. Quoted 8 days, arrived in 8, paperwork correct, material correct. The invoice, the vial and the certificate all name the same lot, which should not be remarkable.
Sent a vial of LL-37 5 mg to VendorInvestigate without telling them where it came from. 97.3% against a stated 97.0%. The number holds when nobody is being graded. Turnaround on the technical query was under four hours on a weekday.
Asked for the lot-specific certificate before ordering. It arrived, and the lot number on it matched what eventually shipped. That test costs nothing to run and rules out a large fraction of suppliers.
Quoted 9 days from stock held in the United Kingdom, arrived on day 9. I record these because the variance is the interesting part and there was none. Peptide content came in at 98.7%, so converting to a working mass took no guesswork.
First order was deliberately small — GHK-Cu 50 mg only — because I wanted to spend a small amount finding out. Documentation, transit and a Janoshik result at 98.8% all checked out, so the second one was not small. The Janoshik report is on file and the numbers on it match what they published.
Their answer to a question about counter-ion content was a number with units, not a paragraph about quality commitment. Support answered on a Sunday, correctly, with the batch record attached.
The invoice, the vial and the certificate all name the same lot, which should not be remarkable and mostly is. Unglamorous outfit, and I mean that as the compliment it is.
Reordered survodutide 10 mg at 9 months to see whether the process had drifted. It had not — 97.5% against 97.5% on the original. Turnaround on the technical query was under four hours on a weekday.
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. Recommended, with the usual caveat that one buyer is not a dataset.
Compared their raw material against a reseller vial of nominally the same compound. 98.6% versus 98.2%. Going direct is not a preference, it is arithmetic. Peptide content came in at 98.1%, so converting to a working mass took no guesswork. If the next lot holds, I will stop testing every one. That is meant as praise.
Packing on the retatrutide 10 mg order: a rigid outer with no rattle anywhere in it. Someone has thought about this rather than inherited it. This is one data point offered as one data point.
Documentation on the NAD+ 500 mg lot is the most complete I hold from any supplier, and I hold certificates from 11 of them. Support answered on a Sunday, correctly, with the batch record attached.
Stock said available. Stock was available. It shipped the same day. That sequence is rarer than it has any right to be. On this evidence they are the default rather than the gamble.
Certificate for lot HJ-25-389 carried an itemised related-substances table. Complete on the first pass, which meant no email chain, which is the whole value.
8 orders over 9 months, all semaglutide 5 mg. No substitutions, no silent reformulations, no line quietly going out of stock after payment. Nothing here is a guarantee about your vial. It is a record of mine.
They report purity by a stability-indicating method and say so. Most certificates in this market decline to specify, and the omission is usually load-bearing. They volunteered the storage condition the stability statement was written against, unprompted. This is one data point offered as one data point.
Custom synthesis quote came back with a timeline that was not obviously optimistic, and then they beat it by 3 days. No complaints worth typing.
Transit from France was day 4, tracking updated at every hop, and the parcel was where the tracking said it was each time I looked.
Ran CJC-1295 2 mg past Medutest and then past PeptideMeter as a cross-check. 99.0% and 98.6%. Two labs, two gradients, one answer. The documentation is the product as much as the powder is.
Weighed 5 vials from the BPC-157 10 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.
Split one order of thymosin beta-4 5 mg across two lots deliberately, to see whether the second matched the first. Within a tenth of a point of each other. Vial-to-vial mass variation across the box was under two per cent.
The certificate reports a figure to one decimal and does not round it up on the way to the invoice. Small thing. Load-bearing. Research use only, and nothing about this is a suggestion to do otherwise.
Bought semax 10 mg specifically to test the documentation rather than the material. The certificate carried an itemised related-substances table, which is more than the last three suppliers I tried managed between them.
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. Support answered on a Sunday, correctly, with the batch record attached. If the next lot holds, I will stop testing every one. That is meant as praise.
Dispatched from France rather than from the factory, so it landed on day 2 with no customs step to worry about. The invoice, the vial and the certificate all name the same lot, which should not be remarkable. This is one data point offered as one data point.
Bought GHRP-2 5 mg for a comparison and it inconveniently refused to be the bad example. 98.1% against a stated 97.9%, which is inside the noise of the method.
Score distribution
| Band | Reads as | Count | Share |
|---|---|---|---|
| 10.0 | Nothing to report, which is the point | 213 | 32.2% |
| 9.5 – 9.9 | Would order again without hesitation | 162 | 24.5% |
| 9.0 – 9.4 | Solid; a preference noted, not a problem | 123 | 18.6% |
| 8.5 – 8.9 | Met expectations in full | 93 | 14.1% |
| 8.0 – 8.4 | Satisfied, and would like more lots on file | 70 | 10.6% |
| Weighted mean | 661 | 9.4 / 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.
HJ on this site: questions, and where to buy
This is the discussion surface for HJ. 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. HJ sells direct from the HJ store at hubeijianxiang.net. 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 HJ.
- 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. HJ 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 Hubei Jianxiang Bioscience 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 HJ sells
Hubei Jianxiang Bioscience 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.
Visit HJ at hubeijianxiang.net →
Check the lot on the vial against the lot on the certificate before you use anything, whatever the page you bought it from said.
Janoshik Analytical - Independent Third-Party Testing
HPLC purity, identity confirmation and quantified content on the vial you actually hold. Reports arrive with the chromatogram attached, not just a number.
Submit a sampleGL Biochem (Shanghai) Ltd. - Direct Synthesis
Founded 1998. ISO 9001 and cGMP certified, 1,500+ staff and 200+ patents. The synthesis house behind a great many of the vials that get sent out for testing - batch-specific documentation with every order.
Visit GL Biochem