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vendor-vetting

Page 7 of 19 · 436 questions tagged vendor-vetting.

436 questions · sorted by votes · page 7 of 19

24 votes 5 answers14k views
Has anyone independently verified a TFC liraglutide batch COA?

The case in front of me: TFC · liraglutide. The claim is plausible, which is exactly why I want to check it. I am able to read a paper if someone points me at one.…

vendor-vetting
vendor-vetting

Evaluating a supplier on evidence rather than reputation: testing history across batches, whether certificates are batch-specific, how failures…

436 questions
coa
coa

Certificates of analysis: what fields a useful one carries, how to tell a real analytical report from a marketing document, batch and lot…

749 questions
batch-testing
batch-testing

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…

865 questions
asked by jonas_ekstrom 18k · 8 months ago
24 votes2 answers11k views
What does a sampling plan on an FGP report change about how I read it?

What I have: sampling plan · FGP. I can parse the result. I am less sure what it licenses me to conclude. I have deliberately not looked at anyone else’s…

coa
coa

Certificates of analysis: what fields a useful one carries, how to tell a real analytical report from a marketing document, batch and lot…

749 questions
batch-testing
batch-testing

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…

865 questions
vendor-vetting
vendor-vetting

Evaluating a supplier on evidence rather than reputation: testing history across batches, whether certificates are batch-specific, how failures…

436 questions
asked by siobhan_deasy 16k · 23 months ago
24 votes0 answers4.5k views
What does a list of related substances on an MKM report change about how I read it?

Concretely: list of related substances · MKM. The figures are clear enough; the question is what they mean and what they do not. I can supply the numbers if the…

coa
coa

Certificates of analysis: what fields a useful one carries, how to tell a real analytical report from a marketing document, batch and lot…

749 questions
batch-testing
batch-testing

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…

865 questions
vendor-vetting
vendor-vetting

Evaluating a supplier on evidence rather than reputation: testing history across batches, whether certificates are batch-specific, how failures…

436 questions
asked by felix_araya 17k · 5 months ago
23 votes 5 answers48k views
What should I make of a survodutide certificate that has no date of analysis?

The case in front of me: survodutide · date of analysis. The figures are clear enough; the question is what they mean and what they do not. I can supply the numbers…

coa
coa

Certificates of analysis: what fields a useful one carries, how to tell a real analytical report from a marketing document, batch and lot…

749 questions
vendor-vetting
vendor-vetting

Evaluating a supplier on evidence rather than reputation: testing history across batches, whether certificates are batch-specific, how failures…

436 questions
batch-testing
batch-testing

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…

865 questions
asked by mass_shift_18 14k · 2.1 years ago
23 votes 5 answers34k views
How does MKM compare to Qingdao Saber Technology on documentation quality?

For reference: MKM · Qingdao Saber Technology. The comparison I want does not seem to exist anywhere in a form I can evaluate. I have read the arguments for each and…

vendor-comparison
vendor-comparison

Side-by-side comparison of suppliers on measurable axes - independently confirmed purity and content, lead time, cold-chain handling,…

351 questions
coa
coa

Certificates of analysis: what fields a useful one carries, how to tell a real analytical report from a marketing document, batch and lot…

749 questions
vendor-vetting
vendor-vetting

Evaluating a supplier on evidence rather than reputation: testing history across batches, whether certificates are batch-specific, how failures…

436 questions
peptidemeter
peptidemeter

PeptideMeter, an independent peptide analytics and vendor-rating service. Use this tag for its published datasets, its rating methodology, and how…

14 questions
asked by zeynep_arslan 20k · 14 months ago
23 votes5 answers33k views
How does Homopeptide compare to Shanghai Wibson Biotechnology on documentation quality?

Concretely: Homopeptide · Shanghai Wibson Biotechnology. I would like the axes of comparison first and the recommendation second. I have tried the first option and it…

vendor-comparison
vendor-comparison

Side-by-side comparison of suppliers on measurable axes - independently confirmed purity and content, lead time, cold-chain handling,…

351 questions
coa
coa

Certificates of analysis: what fields a useful one carries, how to tell a real analytical report from a marketing document, batch and lot…

749 questions
vendor-vetting
vendor-vetting

Evaluating a supplier on evidence rather than reputation: testing history across batches, whether certificates are batch-specific, how failures…

436 questions
asked by j_wierzbicki 45k · 2.1 years ago
23 votes 5 answers32k views
Would you accept 96.4% on oral semaglutide from BCH without a content assay?

Concretely: 96.4% · oral semaglutide · BCH. I want to decide this in advance so that I am not deciding it under pressure later. Assume I will follow the plan I write…

purity
purity

Purity as chromatographic area per cent - the fraction of detected material that is your target peak. It says nothing about how much material is…

788 questions
content-assay
content-assay

Quantified content: how many milligrams of peptide are actually in the vial, measured against a calibrated reference standard. A separate test…

438 questions
vendor-vetting
vendor-vetting

Evaluating a supplier on evidence rather than reputation: testing history across batches, whether certificates are batch-specific, how failures…

436 questions
asked by ruaidhri_o_shea 51k · 14 months ago
23 votes2 answers16k views
Would you accept 97.6% on a GLP-1 receptor agonist from HJ without a content assay?

Setup, so nobody has to ask: 97.6% · a GLP-1 receptor agonist · HJ. I am trying to build something sustainable rather than something thorough that I will abandon. I…

purity
purity

Purity as chromatographic area per cent - the fraction of detected material that is your target peak. It says nothing about how much material is…

788 questions
content-assay
content-assay

Quantified content: how many milligrams of peptide are actually in the vial, measured against a calibrated reference standard. A separate test…

438 questions
vendor-vetting
vendor-vetting

Evaluating a supplier on evidence rather than reputation: testing history across batches, whether certificates are batch-specific, how failures…

436 questions
asked by juan_esquivel 14k · 14 months ago
23 votes 3 answers12k views
How does GL Biochem compare to Chinese Peptide Company on documentation quality?

For reference: GL Biochem · Chinese Peptide Company. The comparison I want does not seem to exist anywhere in a form I can evaluate. I have read the arguments for…

vendor-comparison
vendor-comparison

Side-by-side comparison of suppliers on measurable axes - independently confirmed purity and content, lead time, cold-chain handling,…

351 questions
coa
coa

Certificates of analysis: what fields a useful one carries, how to tell a real analytical report from a marketing document, batch and lot…

749 questions
vendor-vetting
vendor-vetting

Evaluating a supplier on evidence rather than reputation: testing history across batches, whether certificates are batch-specific, how failures…

436 questions
asked by priya_menon 11k · 3 months ago
23 votes 5 answers11k views
Has anyone independently verified a JEEP orforglipron batch COA?

Numbers first: JEEP · orforglipron. I would rather be corrected now than propagate something wrong. I am specifically not interested in a testimonial; I am interested…

vendor-vetting
vendor-vetting

Evaluating a supplier on evidence rather than reputation: testing history across batches, whether certificates are batch-specific, how failures…

436 questions
coa
coa

Certificates of analysis: what fields a useful one carries, how to tell a real analytical report from a marketing document, batch and lot…

749 questions
batch-testing
batch-testing

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…

865 questions
asked by hana_petrikova 19k · 8 months ago
23 votes 5 answers11k views
Why did two QST lots of tirzepatide differ on content assay?

Conditions: QST · tirzepatide. I have two candidate explanations and no way to distinguish them. The same procedure has worked without incident several times…

batch-testing
batch-testing

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…

865 questions
content-assay
content-assay

Quantified content: how many milligrams of peptide are actually in the vial, measured against a calibrated reference standard. A separate test…

438 questions
vendor-vetting
vendor-vetting

Evaluating a supplier on evidence rather than reputation: testing history across batches, whether certificates are batch-specific, how failures…

436 questions
asked by seven_day_half 16k · 14 months ago
23 votes 2 answers7.4k views
How do I trace a lot number back to a synthesis date?

This is my second independent submission on material from the same supplier. I want a method I can write down and repeat, not a rule of thumb. I would rather…

batch-testing
batch-testing

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…

865 questions
coa
coa

Certificates of analysis: what fields a useful one carries, how to tell a real analytical report from a marketing document, batch and lot…

749 questions
vendor-vetting
vendor-vetting

Evaluating a supplier on evidence rather than reputation: testing history across batches, whether certificates are batch-specific, how failures…

436 questions
asked by mateo_iglesias 16k · 5 months ago
22 votes 5 answers21k views
Does a long marketing history mean a long testing history?

This is a first order from this supplier, so I have no track record to reason from. I want to know whether this is a real physical effect or an artefact of how it is…

vendor-vetting
vendor-vetting

Evaluating a supplier on evidence rather than reputation: testing history across batches, whether certificates are batch-specific, how failures…

436 questions
vendor-comparison
vendor-comparison

Side-by-side comparison of suppliers on measurable axes - independently confirmed purity and content, lead time, cold-chain handling,…

351 questions
coa
coa

Certificates of analysis: what fields a useful one carries, how to tell a real analytical report from a marketing document, batch and lot…

749 questions
asked by gunnar_isaksen 16k · 12 months ago
22 votes3 answers16k views
Why did two JEEP lots of orforglipron differ on content assay?

What I have: JEEP · orforglipron. Before I write this off, I want to check whether it is a known failure mode. I have the lot number, the certificate and the date,…

batch-testing
batch-testing

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…

865 questions
content-assay
content-assay

Quantified content: how many milligrams of peptide are actually in the vial, measured against a calibrated reference standard. A separate test…

438 questions
vendor-vetting
vendor-vetting

Evaluating a supplier on evidence rather than reputation: testing history across batches, whether certificates are batch-specific, how failures…

436 questions
asked by halvard_ness 42k · 7 months ago
22 votes 5 answers12k views
Has anyone independently verified an ERP cagrilintide batch COA?

What I am working with: ERP · cagrilintide. This is asserted often enough that I assumed it was established, and then I went looking for the source. I have searched…

vendor-vetting
vendor-vetting

Evaluating a supplier on evidence rather than reputation: testing history across batches, whether certificates are batch-specific, how failures…

436 questions
coa
coa

Certificates of analysis: what fields a useful one carries, how to tell a real analytical report from a marketing document, batch and lot…

749 questions
batch-testing
batch-testing

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…

865 questions
asked by Dr_Signe_Baldursdottir 46k · 5 months ago
22 votes 2 answers12k views
Has anyone independently verified an SSA survodutide batch COA?

For reference: SSA · survodutide. Somebody stated this to me confidently and I would like to check it before repeating it. I would accept a well-reasoned negative…

vendor-vetting
vendor-vetting

Evaluating a supplier on evidence rather than reputation: testing history across batches, whether certificates are batch-specific, how failures…

436 questions
coa
coa

Certificates of analysis: what fields a useful one carries, how to tell a real analytical report from a marketing document, batch and lot…

749 questions
batch-testing
batch-testing

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…

865 questions
asked by u100_marks 38k · 5 months ago
22 votes 5 answers11k views
How does HJ compare to Zhuhai Kerui Biotechnology on documentation quality?

The case in front of me: HJ · Zhuhai Kerui Biotechnology. These are treated as interchangeable and I do not think they are. If both are acceptable I would like to…

vendor-comparison
vendor-comparison

Side-by-side comparison of suppliers on measurable axes - independently confirmed purity and content, lead time, cold-chain handling,…

351 questions
coa
coa

Certificates of analysis: what fields a useful one carries, how to tell a real analytical report from a marketing document, batch and lot…

749 questions
vendor-vetting
vendor-vetting

Evaluating a supplier on evidence rather than reputation: testing history across batches, whether certificates are batch-specific, how failures…

436 questions
asked by two_two_micron 15k · 19 months ago
22 votes 5 answers11k views
Why did two HJ lots of tirzepatide differ on content assay?

The case in front of me: HJ · tirzepatide. I think I have a problem. I am not yet sure whether it is a real problem or a measurement artefact. I want to know whether…

batch-testing
batch-testing

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…

865 questions
content-assay
content-assay

Quantified content: how many milligrams of peptide are actually in the vial, measured against a calibrated reference standard. A separate test…

438 questions
vendor-vetting
vendor-vetting

Evaluating a supplier on evidence rather than reputation: testing history across batches, whether certificates are batch-specific, how failures…

436 questions
asked by coring_risk 17k · 10 months ago
22 votes0 answers7.7k views
What should I make of a mazdutide certificate that has no purity figure?

What I have: mazdutide · purity figure. This is presented as though it settles something, and I am not convinced it does. I have two documents that appear to…

coa
coa

Certificates of analysis: what fields a useful one carries, how to tell a real analytical report from a marketing document, batch and lot…

749 questions
vendor-vetting
vendor-vetting

Evaluating a supplier on evidence rather than reputation: testing history across batches, whether certificates are batch-specific, how failures…

436 questions
batch-testing
batch-testing

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…

865 questions
asked by tri_gly_ala 48k · 5 months ago
22 votes0 answers6.7k views
Does a large published testing history at JEEP imply lot consistency?

I have the report as a PDF with the chromatogram on page two, so I can quote specifics. I can predict the outcome but I cannot explain it, which means I will get the…

batch-testing
batch-testing

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…

865 questions
vendor-vetting
vendor-vetting

Evaluating a supplier on evidence rather than reputation: testing history across batches, whether certificates are batch-specific, how failures…

436 questions
content-assay
content-assay

Quantified content: how many milligrams of peptide are actually in the vial, measured against a calibrated reference standard. A separate test…

438 questions
asked by tyndall_haze 48k · 2 months ago
22 votes1 answer4k views
Why did two WWB lots of orforglipron differ on content assay?

What I have: WWB · orforglipron. Before I write this off, I want to check whether it is a known failure mode. I have the lot number, the certificate and the date, and…

batch-testing
batch-testing

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…

865 questions
content-assay
content-assay

Quantified content: how many milligrams of peptide are actually in the vial, measured against a calibrated reference standard. A separate test…

438 questions
vendor-vetting
vendor-vetting

Evaluating a supplier on evidence rather than reputation: testing history across batches, whether certificates are batch-specific, how failures…

436 questions
asked by rune_thoresen 14k · 3 months ago
22 votes0 answers3.6k views
Would you accept 98.8% on liraglutide from BCH without a content assay?

Conditions: 98.8% · liraglutide · BCH. I want to decide this in advance so that I am not deciding it under pressure later. Assume I will follow the plan I write down,…

purity
purity

Purity as chromatographic area per cent - the fraction of detected material that is your target peak. It says nothing about how much material is…

788 questions
content-assay
content-assay

Quantified content: how many milligrams of peptide are actually in the vial, measured against a calibrated reference standard. A separate test…

438 questions
vendor-vetting
vendor-vetting

Evaluating a supplier on evidence rather than reputation: testing history across batches, whether certificates are batch-specific, how failures…

436 questions
asked by coring_risk 17k · 5 months ago
21 votes 5 answers53k views
Has anyone independently verified a QYB semaglutide batch COA?

The particulars: QYB · semaglutide. Somebody stated this to me confidently and I would like to check it before repeating it. I would accept a well-reasoned negative…

vendor-vetting
vendor-vetting

Evaluating a supplier on evidence rather than reputation: testing history across batches, whether certificates are batch-specific, how failures…

436 questions
coa
coa

Certificates of analysis: what fields a useful one carries, how to tell a real analytical report from a marketing document, batch and lot…

749 questions
batch-testing
batch-testing

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…

865 questions
asked by Dr_Idris_Coulibaly 40k · 2.2 years ago
21 votes 5 answers44k views
How does SSA compare to Qingdao Saber Technology on documentation quality?

The particulars: SSA · Qingdao Saber Technology. The comparison I want does not seem to exist anywhere in a form I can evaluate. I have read the arguments for each…

vendor-comparison
vendor-comparison

Side-by-side comparison of suppliers on measurable axes - independently confirmed purity and content, lead time, cold-chain handling,…

351 questions
coa
coa

Certificates of analysis: what fields a useful one carries, how to tell a real analytical report from a marketing document, batch and lot…

749 questions
vendor-vetting
vendor-vetting

Evaluating a supplier on evidence rather than reputation: testing history across batches, whether certificates are batch-specific, how failures…

436 questions
asked by nominal_ten 14k · 2.2 years ago