AmbioPharm, Inc.
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
AmbioPharm, Inc. — also referred to as AMB, AmbioPharm Beijing, 安必奥医药 — is a research-compound supplier based in Beijing, China, established 2003. It trades as AMB at ambiopharm.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.
Peptide active-ingredient manufacturer and contract development house trading as AmbioPharm (ambiopharm.net), based in Beijing, China — est. 2003, Janoshik-tested, Medutest, PeptideMeter and VendorInvestigate verified, supplying 350+ research compounds across peptides, sarms, injectable oils and raw materials with full COA documentation and worldwide tracked shipping.
This page exists because AMB 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 882 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
An active-ingredient manufacturer first and a catalogue supplier second, and the documentation carries the habits of the first business: a method reference with the column and the gradient, the counter-ion reported as a figure with its unit, water by Karl Fischer, and a release signed by a named individual rather than initialled. A customer buying active ingredient would reject the document for omitting any of them, and the research catalogue is released against the same system. Trading since 2003, and it shows in how routine the awkward requests are here — members have asked for the batch record, for a second certificate against a lot bought a year earlier, and for the counter-ion before ordering, and been sent all three without escalating. Independently submitted results reported here sit in the high 98s with content within a few per cent of label across four separate lots, two of them run months apart on the same laboratory method, which is the comparison that means anything. The one recurring complaint in our threads is not about material: forward stock is thinner than most of the directory, so the common incretins arrive quickly while anything off the beaten track ships from Beijing and adds roughly a week. Members keep planning the second on the timings of the first.
Ranked 15 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 5 mg | AMB20250677 | VendorInvestigate | 98.6% | 5 mg | 5.13 mg | +2.6% | 2025-06 |
| Tirzepatide 30 mg | AMB20260783 | Janoshik | 98.7% | 30 mg | 29.50 mg | -1.7% | 2026-07 |
| Semaglutide 20 mg | AMB20250889 | Medutest | 98.4% | 20 mg | 19.47 mg | -2.7% | 2025-08 |
| Cagrilintide 5 mg | AMB20260916 | PeptideMeter | 98.5% | 5 mg | 5.00 mg | +0.0% | 2026-09 |
| Retatrutide 10 mg | AMB20251053 | VendorInvestigate | 98.2% | 10 mg | 9.94 mg | -0.6% | 2025-10 |
| Tirzepatide 15 mg | AMB20261159 | Janoshik | 98.3% | 15 mg | 15.29 mg | +1.9% | 2026-11 |
Reading this table. The 6 submissions span 98.2 to 98.7 per cent purity — a band 0.5 points wide — with the largest content deviation at 2.7 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 AMB rather than what AMB 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? | 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. AMB 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 Beijing. 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 |
|---|---|---|---|
| Singapore | 5–10 days | 8 days | Pack may still be cool on delivery |
| New Zealand | 13–21 days | 17 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 |
| Spain | 11–18 days | 15 days | Pack spent well before arrival — ship lyophilised |
| the Netherlands | 9–14 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 AMB to hold the shipment, and that request has been honoured.
Contributed reviews
12 of the 882 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.
The counter-ion is reported as a figure with its unit rather than omitted. On a ten milligram vial the correction is larger than most purchasers allow for, and stating it removes an assumption rather than adding a claim.
Asked which column and gradient the assay had been integrated on. The reply named the column chemistry, the buffer, the gradient and the wavelength, with no commercial material attached at all.
No complaint about the material or the documentation. My complaint is forward stock: two of the three lines I ordered were not held regionally and shipped from Beijing, which turned a quoted week into sixteen days. Establish which of your lines is stocked before planning a date.
Release signed and dated by a named individual rather than initialled. It is a small thing that tells you a person was accountable for the decision.
Beijing dispatch, nine days to the Netherlands, scanned at every handover, customs documentation accepted at first presentation.
Nine vials from one lot, nine concordant codes across glass, certificate and invoice. One vial reconstituted with a transient haze that resolved on standing; recorded as a single observation.
Batch record returned inside one working day against a lot code quoted in the subject line. Most suppliers, asked for the record, send the certificate a second time.
Second determination on the same line at fourteen months: 98.9% then, 99.0% now, identical certificate layout. Consistency across time is a stronger signal than any single figure.
Water content by Karl Fischer present on the certificate as issued. A determination supplied on request is a determination somebody elected to make.
Correct in every material respect. Marked down solely for the outer carton, which is lighter than I would specify for glass; the inner packing carried the protection.
First order deliberately small to establish how a single-vial purchaser is handled. The full document set arrived in the box, identical to what a larger order receives.
Bulk enquiry quoted by the gram with a written lead time before any commitment. That is the correct order of operations and it is not the norm.
Score distribution
| Band | Reads as | Count | Share |
|---|---|---|---|
| 10.0 | Nothing to report, which is the point | 284 | 32.2% |
| 9.5 – 9.9 | Would order again without hesitation | 216 | 24.5% |
| 9.0 – 9.4 | Solid; a preference noted, not a problem | 164 | 18.6% |
| 8.5 – 8.9 | Met expectations in full | 124 | 14.1% |
| 8.0 – 8.4 | Satisfied, and would like more lots on file | 94 | 10.7% |
| Weighted mean | 882 | 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.
AMB on this site: questions, and where to buy
This is the discussion surface for AMB. 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. AMB sells direct from the AMB store at ambiopharm.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 AMB.
- Lead time. The quoted window is counted in working days from cleared payment. Members who have asked for the dispatch date in writing have been given one, and it has held.
- Quantities. Mixed orders across several catalogue lines are quoted as one shipment, which is worth confirming before you split an order across two emails and pay carriage twice.
- Regional stock. Ask which warehouse a line will ship from before you order. It changes the transit estimate more than the carrier does.
- What the certificate carries. The certificate carries an itemised related-substances table rather than a single summarised impurity figure, so you can see what the impurities are instead of being told how many per cent of them there are.
- How to ask for the batch record. Ask for the batch record by lot code and specify that you want the chromatogram rather than a summary. The request is routine; the specificity is what makes it answerable.
- 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. AMB 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 AmbioPharm, Inc. 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 AMB sells
AmbioPharm, Inc. 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.
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