Positions 26–50 of 95.
how do you actually verify batch. Searched first, found three threads that contradict each other, hence the post. HJ BPC, batch matched the paperwork, PeptideMeter came…
Proposal, not a decision: proposal — a flair for Medutest posts. If the report gives a mass spectrum as well as UV purity, say so. Identity and relative quantity are…
how much of what we believe about PeptideMeter actually comes from test results threads. I would rather ask a basic question now than get this wrong quietly for two…
Asking properly rather than in a comment on somebody else’s thread: how do you actually verify Janoshik. On inter-lab disagreement, which generates more heat here than…
Vendor-level purity averages over time, built from independent results rather than vendor claims. Transparent methodology, open dataset.
Browse resultsThe title is the argument: reading test results threads from 2024 and half of it aged badly. Here is the rest of it. Have now spent more on testing than on some of the…
Right: QYB BPC — Medutest came back 99.2% against a claimed 99.0%. I paid for this one myself, nobody sent me anything, and the receipts are in the comments. The…
Asking properly rather than in a comment on somebody else’s thread: how much of what we believe about Medutest actually comes from batch threads. Tested three lots over…
Thinking out loud about this: purity — 20 things I got wrong before I got it right. Date of analysis anchors the result to a manufacturing period. A two-year-old result…
The title is the argument: the test results thing finally clicked for me and I want to write it down. Here is the rest of it. If the report gives a mass spectrum as…
batch — 12 things I got wrong before I got it right. Not a hot take, just something I have not seen said plainly here. Sent a vial in specifically to check a supplier’s…
we are measuring batch at the wrong time and calling it noise — a position I have arrived at slowly and would like tested. On inter-lab disagreement, which generates…
purity — 7 things I got wrong before I got it right. It is the sort of thing everyone half-believes and nobody writes down. Inter-lab variance on this assay runs…
The claim in the title is exactly the claim I am making: SSA BPC — Medutest came back 98.1% against a claimed 97.5%. Nothing implied beyond it. To save the first four…
unpopular opinion: most of what gets said here about test results are guesswork. Change my mind, genuinely — I have no stake in being right about this. How to build a…
The claim in the title is exactly the claim I am making: split one vial across VendorInvestigate and PeptideMeter — 99.1% and 96.8%. Nothing implied beyond it. Numbers,…
Reference standards, analytical reagents and system-suitability material. If you are running your own method, start with a known.
Reference standardsthe Janoshik question that gets asked weekly, answered properly. It is the sort of thing everyone half-believes and nobody writes down. BCH BPC, batch matched the…
Medutest — 16 things I got wrong before I got it right — a position I have arrived at slowly and would like tested. Chain of custody is why member-funded testing is…
Right: Homopeptide vs QSC on the same compound, same month — both cleared 98.0%. I paid for this one myself, nobody sent me anything, and the receipts are in the…
three years of PeptideMeter threads, summarised so you do not have to read them. It is the sort of thing everyone half-believes and nobody writes down. Inter-lab…
Asking properly rather than in a comment on somebody else’s thread: can we stop arguing about below spec until somebody posts a number. On inter-lab disagreement, which…
test results — 21 things I got wrong before I got it right. Change my mind, genuinely — I have no stake in being right about this. Date of analysis anchors the result…
Trying to get a straight answer on this: below spec — what am I missing here. Chain of custody is why member-funded testing is worth more than a supplied certificate:…
batch is the most under-discussed thing on this board — a position I have arrived at slowly and would like tested. Tested three lots over a year rather than three vials…
Janoshik is not what most of this community thinks it is. If you already knew this, the post is not for you and you can scroll on. FGP BPC, batch matched the paperwork,…
The title is the argument: the test results advice in here is 2 years out of date. Here is the rest of it. To save the first four comments: 2 years. Date of analysis…
A running record of independent test results people paid for themselves. Every post follows the same shape: vendor, product, batch, testing service, method, and the number. Good results and bad results are equally welcome and get equal scrutiny.
Certified reference materials for peptide identity and purity work.
sigmaaldrich.comSeveral compounds discussed on GLP Research Hub are sold for research use only and are not approved for human use anywhere. Nothing here is medical advice and none of it is written by your clinician. If a post reads like an instruction, treat it as a description of what one stranger did.
Reference