l.rahimi99/100
Same lot documentation as the factory ships, but out of their warehouse in Australia, so it landed on day 4.
WWB — Wuhan Wansheng Biotechnology Co., Ltd.
Wuhan, CN. The index holds 522 assay reports across 86 batches and 34 compounds, contributed by 6 laboratories. Every figure below is computed from those records and from nothing else.
Where WWB sells
Wuhan Wansheng Biotechnology Co., Ltd. sells from its own storefront. The link is marked nofollow and sponsored: it exists so the figures on this scorecard can be read against what the supplier itself publishes. The index is paid nothing for it and a link is not an assessment.
Visit WWB at wuhanwanshengbio.com →
Every figure above describes lots the index has seen. It says nothing about the lot you are offered, and the only check that does is the one on the certificate against the vial.
Block 1
Identification
Business facts, held constant across the index and not derived from the data. The index sells nothing and takes no supplier payment for placement; the storefront link below is marked nofollow and sponsored so a record can be checked against the seller, and is not a recommendation.
- Legal name
- Wuhan Wansheng Biotechnology Co., Ltd.
- Short code in this index
- WWB
- Also known as
- WWB · Wansheng Bio · WWBT
- Domain
- wuhanwanshengbio.com →
- City
- Wuhan
- Region
- Hubei
- Country
- CN
- Established
- not stated
- First record in index
- 17 Jan 2024
- Most recent record
- 14 Oct 2026
Block 1b
Dispatch and warehouses
Where the supplier holds regional stock. Material assayed by the index is dispatched from these locations, not 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
Block 2
Headline statistics
Each figure carries the n it was computed from. The n= badge next to a statistic is the number of records it was computed from. Below n=8 the badge is amber. Below n=3 the statistic is suppressed and the individual values are shown instead.
Median purity
99.45%
n=522
Interquartile range
0.79pp
n=522
10th percentile
98.76%
n=522
Pass rate vs index spec
99.8%
n=522
Median recovery vs claim
97.4%
n=297
Median water
4.51%
n=522
Median |mass error|
2.7ppm
n=447
Records carrying a flag
70.5%
n=522
Block 3
Reproducibility across independent tests of one lot
Where the same physical lot was assayed more than once, the spread between those results is a property of the material and the fill, not of the market. It is the rarest and most informative statistic on this page, and it exists only for lots someone tested twice.
Median within-batch spread
0.85pp
n=59
Index median spread
0.95pp
n=20
Lots tested 3+ times
59
n=86
Across the 59 WWB lots in the index with three or more independent assays, the median spread between the highest and lowest purity result on one lot is 0.85 pp. Interpreting that number requires the laboratory repeatability figures: the best contributing laboratory here repeats to 0.16 pp and the worst to 0.34 pp, so a within-lot spread under about 0.5 pp is indistinguishable from measurement noise and a spread above 1 pp is a statement about the material.
Block 4
Supplier certificate against independent measurement
The supplier's own COA purity figure for a lot, minus the median of the index's independent observations of the same physical lot. Positive means the certificate reads higher than the measurement. Rule AX-R05 fires above 1.5 pp.
Median COA divergence
+0.28pp
n=86
Index median divergence
+0.31pp
n=20
Divergences in the supplier's favour
74%
n=86
Divergences beyond 1 pp
1%
n=86
Block 5
Provenance — where the tested material came from
Supplier-supplied samples are weaker evidence than independently purchased ones, because the supplier chose the vial. The index measures the size of that effect rather than assuming it.
Buyer-sourced median
98.95%
n=46
Supplier-supplied median
99.51%
n=437
Supplier-supplied share of records
83.7%
n=522
Block 6
Documentation completeness
The score is not an opinion about paperwork. Each component is the share of WWB batches in the index whose certificate carries that field, weighted as set out on the scoring rubric.
Documentation score
92/100
n=86
Index median score
79/100
n=20
| Certificate field | Batches carrying it | Rubric weight | |
|---|---|---|---|
| Purity figure stated | 100% | 25 points | |
| Analytical method stated (column, gradient, wavelength) | 67% | 25 points | |
| Peptide content stated | 74% | 20 points | |
| Endotoxin stated | 35% | 15 points | |
| Named impurities rather than a total | 71% | 15 points |
Block 7
Coverage by compound
The delta column is this supplier's median minus the index-wide median for the same compound, which is the only comparison worth making: comparing a supplier's aggregate against another supplier's aggregate compares their product mixes as much as their process control.
| Compound | Class | Reports | Median % | Index median % | Δ (pp) | Index spec | Pass % |
|---|---|---|---|---|---|---|---|
| Semaglutide | Incretin | 111 | 99.08 | 98.87 | +0.21 | 97.0 | 100 |
| Tirzepatide | Incretin | 47 | 99.14 | 98.44 | +0.70 | 97.0 | 100 |
| Retatrutide | Incretin | 37 | 99.16 | 98.41 | +0.75 | 96.5 | 100 |
| BPC-157 | Tissue-repair | 26 | 99.80 | 99.15 | +0.65 | 98.0 | 100 |
| CJC-1295 with DAC | Growth-hormone | 26 | 99.37 | 98.79 | +0.58 | 97.5 | 100 |
| Semax | Neuroactive | 24 | 99.56 | 99.17 | +0.39 | 98.5 | 100 |
| Liraglutide | Incretin | 19 | 99.55 | 99.02 | +0.53 | 97.5 | 100 |
| Ipamorelin | Growth-hormone | 19 | 99.93 | 99.48 | +0.45 | 99.0 | 95 |
| TB-500 | Tissue-repair | 17 | 99.79 | 99.47 | +0.32 | 98.5 | 100 |
| MK-677 (Ibutamoren mesylate) | Non-peptide | 17 | 99.90 | 99.37 | +0.53 | 98.5 | 100 |
| Afamelanotide | Melanocortin-receptor | 15 | 99.53 | 99.28 | +0.25 | 98.0 | 100 |
| GHRP-6 | Growth-hormone | 14 | 99.93 | 99.65 | +0.28 | 99.0 | 100 |
| Thymulin | Tissue-repair | 13 | 99.12 | 99.06 | +0.06 | 98.0 | 100 |
| Survodutide | Incretin | 13 | 99.06 | 98.69 | +0.38 | 96.5 | 100 |
| Kisspeptin-10 | Melanocortin-receptor | 13 | 99.86 | 99.27 | +0.59 | 98.5 | 100 |
| IGF-1 LR3 | Growth-hormone | 12 | 98.90 | 97.75 | +1.15 | 95.0 | 100 |
| MOTS-c | Metabolic | 12 | 99.64 | 99.18 | +0.46 | 98.0 | 100 |
| PT-141 (Bremelanotide) | Melanocortin-receptor | 11 | 99.93 | 99.31 | +0.62 | 98.5 | 100 |
| ARA-290 | Tissue-repair | 10 | 99.93 | 99.45 | +0.48 | 98.0 | 100 |
| NAD+ | Non-peptide | 9 | 99.70 | 98.88 | +0.82 | 97.0 | 100 |
| Adipotide | Metabolic | 9 | 98.83 | 98.59 | +0.23 | 96.0 | 100 |
| Desmopressin | Hypothalamic | 8 | 99.77 | 99.46 | +0.31 | 98.5 | 100 |
| GHK-Cu | Tissue-repair | 7 n=7 | 99.42 | 98.54 | +0.88 | 97.0 | 100 |
| L-Glutathione (reduced) | Short | 7 n=7 | 99.72 | 99.00 | +0.72 | 98.5 | 100 |
| Melanotan II | Melanocortin-receptor | 7 n=7 | 99.54 | 99.24 | +0.30 | 98.5 | 100 |
| GHRP-2 | Growth-hormone | 6 n=6 | 99.75 | 99.22 | +0.53 | 99.0 | 100 |
| Dihexa | Neuroactive | 3 n=3 | 99.93 | 99.84 | +0.09 | 98.5 | 100 |
| Oxytocin | Hypothalamic | 3 n=3 | 99.93 | 99.57 | +0.36 | 98.5 | 100 |
| IGF-1 DES (1-3) | Growth-hormone | 2 n=2 | n<3 | 98.53 | — | 95.0 | 100 |
| Epitalon | Short | 1 n=1 | n<3 | 98.63 | — | 99.0 | 100 |
| Pramlintide | Incretin | 1 n=1 | n<3 | 98.84 | — | 97.5 | 100 |
| SS-31 (Elamipretide) | Metabolic | 1 n=1 | n<3 | 99.42 | — | 98.5 | 100 |
| Mazdutide | Incretin | 1 n=1 | n<3 | 98.11 | — | 96.5 | 100 |
| KPV | Tissue-repair | 1 n=1 | n<3 | 99.21 | — | 99.0 | 100 |
Full per-compound breakdown with distributions and caveats →
Block 8
Quarterly trend
Submission volume is not market share and a quarterly median is not a trend unless the compound mix held still. Both caveats apply to every row below.
Median purity by quarter
Quarters with fewer than two purity records are gaps in the line rather than zeroes.
Coverage growth
Records added per quarter. Growth here is index coverage, not supplier volume.
| Quarter | Batches | Reports | Median purity | Range | Flagged |
|---|---|---|---|---|---|
| 2024-Q1 | 4 | 40 | 99.43 | 98.63–99.93 | 22 |
| 2024-Q2 | 3 | 25 | 99.93 | 98.96–99.93 | 19 |
| 2024-Q3 | 5 | 30 | 99.19 | 97.88–99.93 | 17 |
| 2024-Q4 | 5 | 45 | 99.26 | 98.56–99.93 | 25 |
| 2025-Q1 | 12 | 83 | 99.34 | 97.95–99.93 | 65 |
| 2025-Q2 | 4 | 15 | 99.79 | 99.29–99.93 | 14 |
| 2025-Q3 | 9 | 22 | 99.69 | 98.30–99.93 | 13 |
| 2025-Q4 | 10 | 53 | 99.31 | 98.36–99.93 | 40 |
| 2026-Q1 | 15 | 80 | 99.64 | 97.67–99.93 | 50 |
| 2026-Q2 | 15 | 92 | 99.40 | 97.99–99.93 | 71 |
| 2026-Q3 | 4 | 37 | 99.36 | 98.70–99.93 | 32 |
Block 9
Which laboratory produced these numbers
Laboratories disagree with each other by a measured amount. A supplier tested mostly by one laboratory carries that laboratory's offset in its aggregate, and the adjusted column removes it.
| Laboratory | Reports | Median purity | Lab bias (pp) | Bias-adjusted |
|---|---|---|---|---|
| Janoshik | 243 | 99.52 | +0.00 | 99.52 |
| PeptideMeter | 94 | 99.41 | -0.05 | 99.46 |
| Medutest | 67 | 99.51 | +0.08 | 99.43 |
| VendorInvestigate | 48 | 98.95 | -0.11 | 99.06 |
| Nordanalyt | 42 | 99.41 | +0.02 | 99.39 |
| Kestrel | 28 | 99.85 | +0.24 | 99.61 |
Bias figures are estimated from paired same-lot comparisons and are published with their confidence intervals on inter-lab agreement.
Block 10
What this data does and does not show
Block 11
On-the-record reviews 26
Reviews are signed statements from index contributors about their own testing of this supplier's material. They are opinions attached to evidence, and they are not used in any statistic on this page.
99.0/ 100975 ratings across the index network
s.nilsen99/100
Reconstituted the hexarelin 5 mg and it went clear on contact — no haze, no floaters, no long swirl. Tells you the lyophilisation was done properly.
z.kowalski99/100
Three compounds on one invoice, all three lot-matched to their own certificates, all three inside spec on independent testing.
re.chukwu99/100
Support answered on a Sunday, correctly, with the batch record attached. That is well beyond what I expected.
s.bakker96/100
Reliable on the general catalogue lines. Purity figures cluster tightly and the certificates match the lots.
ka.roos96/100
Solid on the ipamorelin 5 mg. Purity where it should be, transit 3 days, paperwork in order.
m.laurent99/100
The certificate for lot WWB-24-308 carried method, wavelength, water content and an itemised related-substances table. Complete on the first pass.
y.ndiaye96/100
Consistent rather than flashy. Everything lands in the high nineties, and it lands there every time.
o.novak99/100
The sermorelin 5 mg arrived on day 3 with the cold pack intact and the seal unbroken. Straightforward, exactly as described.
l.nwosu99/100
Lot code on the vial matched the lot code on the certificate exactly. Sounds basic; it is the single best predictor of everything else.
b.abubakar99/100
Their raw material tested 99.9% against a reseller vial of nominally the same compound at 99.4%. Going direct is the whole argument.
a.trevino99/100
Ordered on a Monday from their warehouse in the United States and it was here by day 4. That is the whole case for regional stock.
i.demir99/100
Moved here after two bad lots elsewhere. 9 orders in and the Medutest numbers have been flat every single time.
h.adebayo99/100
Vials wrapped individually, foam cut to fit, nothing loose in the box. Packing that has clearly been thought about.
t.halvorsen96/100
Good communication throughout, accurate lead time, and the parcel arrived on day 4.
j.kirchner99/100
Documentation is better than the two suppliers I used before, and the catalogue covers everything I actually order.
jo.dahlberg96/100
Domestic dispatch from their stock in Germany. Straightforward, day 4, exactly as quoted.
a.balogun99/100
Peptide content reported at 98.6% alongside the purity figure, so I could convert straight to a working mass.
r.kaufmann99/100
One of the few places that will quote TB-500 5 mg at all, and the synthesis came back clean on an independent check.
ad.ibarra96/100
Steady supplier. PeptideMeter results have agreed with their stated figures on every lot I have submitted.
z.haddad99/100
Quoted 5 days, arrived in 4. Tracking updated at every hop from dispatch to door.
k.nascimento99/100
5 lots logged now, purity 98.7 to 98.9%. A band that tight is worth more to me than one spectacular number.
as.kravchenko99/100
Pleased to find they hold stock in Australia. Domestic dispatch, day 4, no customs step at all.
g.beaulieu96/100
Everything about the order was routine in the best sense — quoted 4 days, arrived in 3.
f.kuipers99/100
Third order from them, all GHRP-2 5 mg. Sent one vial from each to Janoshik and the whole set landed inside half a point of each other. That flatness is exactly what I pay for.
j.girard96/100
Held locally in Canada, so the LL-37 5 mg arrived on day 5 without an import step.
Block 12
Most recent records
| Report | Compound | Lot | Lab | Quarter | Purity % | Water % | Recovery % | Provenance | Flags | Result |
|---|---|---|---|---|---|---|---|---|---|---|
| AX-2026-041275 | Liraglutide | WWB-2607-X2189 | Nordanalyt | 2026-Q3 | 99.61 | 5.03 | 97.3 | Supplier-supplied | 0 | PASS |
| AX-2026-041387 | BPC-157 | WWB-2606-H3906 | Janoshik | 2026-Q3 | 98.95 | 4.64 | — | Laboratory-retained | 1 | MARGINAL |
| AX-2026-041334 | Semaglutide | WWB-2606-N3192 | Janoshik | 2026-Q3 | 98.83 | 5.04 | — | Supplier-supplied | 1 | MARGINAL |
| AX-2026-041337 | Semaglutide | WWB-2606-N3192 | Nordanalyt | 2026-Q3 | 98.96 | 4.81 | — | Supplier-supplied | 1 | MARGINAL |
| AX-2026-041385 | BPC-157 | WWB-2606-H3906 | Medutest | 2026-Q3 | 99.31 | 4.31 | — | Supplier-supplied | 1 | MARGINAL |
| AX-2026-041390 | BPC-157 | WWB-2606-H3906 | Medutest | 2026-Q3 | 99.47 | 4.84 | 99.3 | Supplier-supplied | 1 | MARGINAL |
| AX-2026-041386 | BPC-157 | WWB-2606-H3906 | VendorInvestigate | 2026-Q3 | 99.32 | 4.88 | 99.2 | Buyer-sourced | 1 | MARGINAL |
| AX-2026-041335 | Semaglutide | WWB-2606-N3192 | Janoshik | 2026-Q3 | 99.55 | 4.55 | 100.5 | Supplier-supplied | 1 | MARGINAL |
| AX-2026-041271 | Liraglutide | WWB-2607-X2189 | Medutest | 2026-Q3 | 99.93 | 5.24 | 95.8 | Supplier-supplied | 0 | PASS |
| AX-2026-041328 | Semaglutide | WWB-2606-N3192 | Janoshik | 2026-Q3 | 99.48 | 4.59 | — | Supplier-supplied | 1 | MARGINAL |
| AX-2026-041380 | BPC-157 | WWB-2606-H3906 | PeptideMeter | 2026-Q3 | 99.45 | 4.52 | — | Supplier-supplied | 1 | MARGINAL |
| AX-2026-041333 | Semaglutide | WWB-2606-N3192 | Janoshik | 2026-Q3 | 98.80 | 4.51 | 90.6 | Laboratory-retained | 1 | MARGINAL |
| AX-2026-041383 | BPC-157 | WWB-2606-H3906 | PeptideMeter | 2026-Q3 | 99.17 | 4.84 | 91.2 | Supplier-supplied | 1 | MARGINAL |
| AX-2026-041273 | Liraglutide | WWB-2607-X2189 | Janoshik | 2026-Q3 | 99.87 | 4.27 | — | Supplier-supplied | 0 | PASS |
| AX-2026-041272 | Liraglutide | WWB-2607-X2189 | Janoshik | 2026-Q3 | 99.15 | 4.12 | 97.2 | Supplier-supplied | 0 | PASS |
| AX-2026-041388 | BPC-157 | WWB-2606-H3906 | Janoshik | 2026-Q3 | 99.59 | 4.24 | 105.8 | Supplier-supplied | 1 | MARGINAL |
| AX-2026-041378 | BPC-157 | WWB-2606-H3906 | Janoshik | 2026-Q3 | 99.22 | 4.61 | 99.2 | Supplier-supplied | 1 | MARGINAL |
| AX-2026-041336 | Semaglutide | WWB-2606-N3192 | Kestrel | 2026-Q3 | 99.08 | 4.46 | — | Supplier-supplied | 1 | MARGINAL |
| AX-2026-041256 | Semaglutide | WWB-2602-M2472 | Janoshik | 2026-Q3 | 99.93 | 2.77 | 94.7 | Supplier-supplied | 2 | MARGINAL |
| AX-2026-041258 | Semaglutide | WWB-2602-M2472 | Janoshik | 2026-Q3 | 99.37 | 3.36 | — | Supplier-supplied | 2 | MARGINAL |
| AX-2026-041274 | Liraglutide | WWB-2607-X2189 | Janoshik | 2026-Q3 | 99.55 | 4.62 | 89.6 | Supplier-supplied | 1 | MARGINAL |
| AX-2026-041331 | Semaglutide | WWB-2606-N3192 | Medutest | 2026-Q3 | 99.57 | 4.22 | 104.1 | Supplier-supplied | 1 | MARGINAL |
| AX-2026-041257 | Semaglutide | WWB-2602-M2472 | PeptideMeter | 2026-Q3 | 99.23 | 2.75 | — | Supplier-supplied | 2 | MARGINAL |
| AX-2026-041329 | Semaglutide | WWB-2606-N3192 | Nordanalyt | 2026-Q3 | 99.01 | 4.21 | 95.5 | Supplier-supplied | 1 | MARGINAL |
| AX-2026-041327 | Semaglutide | WWB-2606-N3192 | VendorInvestigate | 2026-Q3 | 98.70 | 4.78 | — | Buyer-sourced | 1 | MARGINAL |