AssayIndex
Supplier scorecard

ERP — Shanghai ERP Biotechnology Co., Ltd.

Shanghai, CN · established 2018. The index holds 247 assay reports across 50 batches and 27 compounds, contributed by 6 laboratories. Every figure below is computed from those records and from nothing else.

247 reports50 batchesmedian purity 98.88 %documentation 80/100

Where ERP sells

Shanghai ERP 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 ERP at erpbiotechnology.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
Shanghai ERP Biotechnology Co., Ltd.
Short code in this index
ERP
Also known as
ERP · ERP Biotech · Shanghai ERP Biotechnology
City
Shanghai
Region
Shanghai
Country
CN
Established
2018
First record in index
13 Apr 2024
Most recent record
07 Oct 2026
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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
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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 98.88% n=242
Interquartile range 0.87pp n=242
10th percentile 98.03% n=242
Pass rate vs index spec 97.1% n=242
Median recovery vs claim 98.0% n=146
Median water 4.18% n=247
Median |mass error| 2.2ppm n=201
Records carrying a flag 84.6% n=247
013263992.093.094.095.096.097.098.099.0100.092.00–92.25 %: n=092.25–92.50 %: n=092.50–92.75 %: n=092.75–93.00 %: n=093.00–93.25 %: n=093.25–93.50 %: n=093.50–93.75 %: n=093.75–94.00 %: n=094.00–94.25 %: n=094.25–94.50 %: n=094.50–94.75 %: n=094.75–95.00 %: n=095.00–95.25 %: n=095.25–95.50 %: n=095.50–95.75 %: n=095.75–96.00 %: n=096.00–96.25 %: n=096.25–96.50 %: n=096.50–96.75 %: n=196.75–97.00 %: n=097.00–97.25 %: n=297.25–97.50 %: n=497.50–97.75 %: n=497.75–98.00 %: n=1198.00–98.25 %: n=1498.25–98.50 %: n=2298.50–98.75 %: n=3298.75–99.00 %: n=4599.00–99.25 %: n=2599.25–99.50 %: n=2999.50–99.75 %: n=2499.75–100.00 %: n=29median 98.88 Purity (% area) Reports
Figure 1. Purity distribution for all 242 ERP records carrying a purity figure. Domain fixed at 92–100 % area and bin width 0.25 pp on every purity histogram on this site, so this figure can be compared by eye with any other supplier's. Dashed line is the ERP median, 98.88 %; the index median is 98.99 %.
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 0.89pp n=37
Index median spread 0.95pp n=20
Lots tested 3+ times 37 n=50

Across the 37 ERP lots in the index with three or more independent assays, the median spread between the highest and lowest purity result on one lot is 0.89 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 +0.37pp n=49
Index median divergence +0.31pp n=20
Divergences in the supplier's favour 88% n=49
Divergences beyond 1 pp 4% n=49
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 98.69% n=40
Supplier-supplied median 99.00% n=192
Supplier-supplied share of records 78.9% n=247
96.497.197.798.398.999.6100.2Buyer-sourcedBuyer-sourced: Q1 98.33, median 98.69, Q3 98.97, n=40outlier 96.69outlier 97.02outlier 97.28n=40Supplier-suppliedSupplier-supplied: Q1 98.54, median 99.00, Q3 99.52, n=192n=192Laboratory-retainedLaboratory-retained: Q1 98.29, median 98.75, Q3 98.95, n=10n=10 Purity (% area)
Figure 2. ERP purity by sample provenance. Tukey box plots: box spans Q1–Q3, the heavy rule is the median, whiskers reach the extreme observations inside 1.5 IQR of the box, and points outside the fences are plotted individually. The vertical line is the ERP overall median. Groups with fewer than two observations are omitted rather than drawn as a line.
Block 6

Documentation completeness

The score is not an opinion about paperwork. Each component is the share of ERP batches in the index whose certificate carries that field, weighted as set out on the scoring rubric.

Documentation score 80/100 n=50
Index median score 79/100 n=20
Certificate fieldBatches carrying itRubric weight
Purity figure stated100%25 points
Analytical method stated (column, gradient, wavelength)62%25 points
Peptide content stated68%20 points
Endotoxin stated36%15 points
Named impurities rather than a total46%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.

CompoundClassReportsMedian %Index median %Δ (pp)Index specPass %
SemaglutideIncretin4098.7798.87-0.1197.0100
BPC-157Tissue-repair3399.2199.15+0.0698.0100
TB-500Tissue-repair2299.2399.47-0.2398.5100
TirzepatideIncretin2098.6498.44+0.2097.095
IpamorelinGrowth-hormone1599.9399.48+0.4599.087
TesamorelinGrowth-hormone1298.8098.43+0.3697.0100
GHK-CuTissue-repair1298.4998.54-0.0597.0100
SemaxNeuroactive999.8199.17+0.6498.5100
LiraglutideIncretin898.4799.02-0.5497.5100
CJC-1295 (no DAC)Growth-hormone898.8998.61+0.2898.0100
CJC-1295 with DACGrowth-hormone7 n=799.5298.79+0.7397.5100
MazdutideIncretin6 n=697.5398.11-0.5896.5100
Humanin (HNG)Metabolic6 n=698.8899.47-0.5997.5100
Kisspeptin-10Melanocortin-receptor6 n=698.9999.27-0.2798.583
RetatrutideIncretin5 n=598.5398.41+0.1296.5100
OxytocinHypothalamic5 n=598.8299.57-0.7598.5100
PemvidutideIncretin5 n=598.7898.41+0.3796.0100
Follistatin-344Growth-hormone5 n=5n<3——98.0—
SurvodutideIncretin4 n=498.1398.69-0.5696.5100
GonadorelinHypothalamic4 n=499.5799.28+0.2998.5100
PEG-MGFGrowth-hormone3 n=398.0897.92+0.1692.0100
MOTS-cMetabolic3 n=398.7799.18-0.4198.0100
GHRP-6Growth-hormone3 n=398.9799.65-0.6899.033
GlucagonIncretin2 n=2n<398.78—98.050
NAD+Non-peptide2 n=2n<398.88—97.0100
SelankNeuroactive1 n=1n<399.13—99.0100
MGFGrowth-hormone1 n=1n<398.73—97.5100

Full per-compound breakdown with distributions and caveats →

96.497.197.798.398.999.6100.2SemaglutideSemaglutide: Q1 98.24, median 98.77, Q3 99.25, n=40n=40BPC-157BPC-157: Q1 98.88, median 99.21, Q3 99.63, n=33n=33TB-500TB-500: Q1 98.95, median 99.23, Q3 99.55, n=22n=22TirzepatideTirzepatide: Q1 98.06, median 98.64, Q3 99.11, n=20n=20IpamorelinIpamorelin: Q1 99.20, median 99.93, Q3 99.93, n=15n=15TesamorelinTesamorelin: Q1 98.53, median 98.80, Q3 99.17, n=12n=12GHK-CuGHK-Cu: Q1 98.38, median 98.49, Q3 98.84, n=12n=12SemaxSemax: Q1 99.57, median 99.81, Q3 99.87, n=9outlier 99.05n=9LiraglutideLiraglutide: Q1 98.39, median 98.47, Q3 98.61, n=8n=8CJC-1295 (no DAC)CJC-1295 (no DAC): Q1 98.62, median 98.89, Q3 99.10, n=8outlier 99.93n=8CJC-1295 with DACCJC-1295 with DAC: Q1 99.04, median 99.52, Q3 99.92, n=7n=7MazdutideMazdutide: Q1 97.33, median 97.53, Q3 97.86, n=6n=6Humanin (HNG)Humanin (HNG): Q1 98.78, median 98.88, Q3 99.25, n=6n=6Kisspeptin-10Kisspeptin-10: Q1 98.87, median 98.99, Q3 99.21, n=6outlier 98.19n=6 Purity (% area)
Figure 3. ERP purity by compound, for the 14 compounds with at least four ERP records. Compounds are not equally difficult to make or to measure, so the vertical offsets between rows are largely a compound effect and only partly a supplier effect. Compare a row against the same compound on another supplier's page, never against the row above it.
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.

QuarterBatchesReportsMedian purityRangeFlagged
2024-Q100n<3—0
2024-Q242299.0698.19–99.6622
2024-Q374298.9797.74–99.9339
2024-Q42398.5198.22–99.842
2025-Q163299.1297.77–99.9332
2025-Q22699.0698.72–99.466
2025-Q372798.7997.94–99.9019
2025-Q484398.8196.69–99.9338
2026-Q152299.0797.90–99.9312
2026-Q263098.4697.02–99.7521
2026-Q332098.8097.92–99.9318

Full quarterly timeline, batch by batch →

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.

LaboratoryReportsMedian purityLab bias (pp)Bias-adjusted
Janoshik11899.03+0.0099.03
PeptideMeter3998.81-0.0598.86
Medutest3998.98+0.0898.90
VendorInvestigate2198.63-0.1198.73
Nordanalyt1298.81+0.0298.79
Kestrel1899.14+0.2498.90

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.

97.0/ 100894 ratings across the index network
f.okwuosa98/100

Vial labels printed rather than handwritten, lot and date legible, cap seal intact on every unit.

le.haddad98/100

Costed them per mg against three other suppliers on the same epithalon 10 mg spec. Competitive on price and clearly ahead on documentation.

d.batista98/100

Peptide content reported at 99.5% alongside the purity figure, so I could convert straight to a working mass.

i.trevino98/100

Their warehouse in the United Kingdom had the glutathione 600 mg in stock and it shipped the same afternoon. Tracking never left the country.

ca.espinoza94/100

Good communication throughout, accurate lead time, and the parcel arrived on day 5.

i.zielinski94/100

Fair pricing for the documentation standard, and delivery landed on day 2 as quoted.

z.moreau98/100

Lot code on the vial matched the lot code on the certificate exactly. Sounds basic; it is the single best predictor of everything else.

s.trevino94/100

Domestic dispatch from their stock in the United States. Straightforward, day 5, exactly as quoted.

h.stanescu98/100

Reconstituted the tirzepatide 10 mg and it went clear on contact — no haze, no floaters, no long swirl. Tells you the lyophilisation was done properly.

d.guerrero98/100

Asked them to hold an order until I confirmed a lot number and they did, without fuss and without a restocking charge.

a.sobczak98/100

Dispatched from their warehouse in the United States rather than from the factory, so the PT-141 10 mg was with me on day 3.

b.vukovic94/100

Held locally in Germany, so the tirzepatide 10 mg arrived on day 4 without an import step.

e.onwuka98/100

Queried the related-substances total on lot ERP-25-628; they came back with method, column and detection limit. That depth is rare.

an.pereira98/100

The tesamorelin 2 mg arrived on day 4 with the cold pack intact and the seal unbroken. Straightforward, exactly as described.

r.sjoberg94/100

Consistent rather than flashy. Everything lands in the high nineties, and it lands there every time.

m.hovland98/100

Their raw material tested 98.1% against a reseller vial of nominally the same compound at 97.7%. Going direct is the whole argument.

k.petrescu98/100

VendorInvestigate has now seen 6 of their lots through me. Not one has come back outside spec.

k.lundgren98/100

Submitted the semaglutide 5 mg to Medutest blind, without telling them the source. 99.6% against a stated 99.1%. The number holds up when nobody knows whose vial it is.

an.aguirre98/100

Asked a genuinely technical question about pre-dispatch storage and got a reply with numbers in it, inside 4 hours.

b.vogel98/100

6 orders in eighteen months, no substitutions, no reformulations, everything in stock when the site said it was. Boring is the highest compliment I have.

n.brandt94/100

Documentation is complete and the numbers are steady. A dependable choice for routine work.

m.serrano98/100

Certificate claimed 98.7% on lot ERP-24-930. Medutest came back 98.8%. On an independent column that is as close to agreement as this gets.

r.karlsen98/100

Same lot documentation as the factory ships, but out of their warehouse in Germany, so it landed on day 2.

me.agyeman98/100

They report purity by RP-HPLC with the wavelength stated and peptide content separately. Two different numbers, correctly separated.

h.hartmann94/100

Reliable on the general catalogue lines. Purity figures cluster tightly and the certificates match the lots.

v.pires94/100

Shipped from their warehouse in Australia, arrived day 3, documentation complete.

Block 12

Most recent records

The 25 most recently submitted ERP records. All 247 are listed on the full record listing.
ReportCompoundLotLabQuarterPurity %Water %Recovery %ProvenanceFlagsResult
AX-2026-042574TB-500ERP-2605-S8022VendorInvestigate2026-Q399.542.9196.4Buyer-sourced1MARGINAL
AX-2026-042535TesamorelinERP-2604-W7280Janoshik2026-Q399.193.8992.7Supplier-supplied1MARGINAL
AX-2026-042577TB-500ERP-2605-S8022Janoshik2026-Q399.513.45—Supplier-supplied1MARGINAL
AX-2026-042542TesamorelinERP-2604-W7280Janoshik2026-Q398.544.58103.1Supplier-supplied2FAIL
AX-2026-042547SurvodutideERP-2605-E7682PeptideMeter2026-Q398.255.4493.0Supplier-supplied1MARGINAL
AX-2026-042540TesamorelinERP-2604-W7280Kestrel2026-Q399.723.47103.2Supplier-supplied1MARGINAL
AX-2026-042575TB-500ERP-2605-S8022Janoshik2026-Q399.933.3695.5Supplier-supplied0PASS
AX-2026-042539TesamorelinERP-2604-W7280Janoshik2026-Q398.774.3089.9Buyer-sourced2MARGINAL
AX-2026-042548SurvodutideERP-2605-E7682Janoshik2026-Q397.925.9692.8Supplier-supplied1MARGINAL
AX-2026-042544TesamorelinERP-2604-W7280VendorInvestigate2026-Q398.803.88—Buyer-sourced2FAIL
AX-2026-042534TesamorelinERP-2604-W7280Janoshik2026-Q399.063.9092.8Supplier-supplied1MARGINAL
AX-2026-042536TesamorelinERP-2604-W7280Janoshik2026-Q398.434.33107.5Supplier-supplied2FAIL
AX-2026-042543TesamorelinERP-2604-W7280PeptideMeter2026-Q399.164.03—Supplier-supplied0PASS
AX-2026-042576TB-500ERP-2605-S8022PeptideMeter2026-Q399.552.9894.5Supplier-supplied1MARGINAL
AX-2026-042546SurvodutideERP-2605-E7682Janoshik2026-Q398.015.78105.0Supplier-supplied1MARGINAL
AX-2026-042537TesamorelinERP-2604-W7280PeptideMeter2026-Q398.523.9594.1Supplier-supplied1MARGINAL
AX-2026-042538TesamorelinERP-2604-W7280Kestrel2026-Q398.264.37—Supplier-supplied1MARGINAL
AX-2026-042545TesamorelinERP-2604-W7280Janoshik2026-Q399.323.85101.4Supplier-supplied2FAIL
AX-2026-042541TesamorelinERP-2604-W7280PeptideMeter2026-Q398.793.70—Supplier-supplied1MARGINAL
AX-2026-042549SurvodutideERP-2605-E7682Janoshik2026-Q398.735.5191.2Supplier-supplied1MARGINAL
AX-2026-042560MazdutideERP-2603-D7882VendorInvestigate2026-Q297.283.81104.1Buyer-sourced2MARGINAL
AX-2026-042550GHK-CuERP-2601-F7633Janoshik2026-Q298.534.43—Supplier-supplied1MARGINAL
AX-2026-042571GHK-CuERP-2604-K8139Medutest2026-Q299.256.66104.4Supplier-supplied1MARGINAL
AX-2026-042552GHK-CuERP-2601-F7633Kestrel2026-Q298.394.13—Supplier-supplied0PASS
AX-2026-042562MazdutideERP-2603-D7882Janoshik2026-Q297.464.39102.6Supplier-supplied2MARGINAL