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Quality and testing

BCH and the peak table — why I stopped looking at the headline figure

Started 2 June 2025 · 5 replies · 72 hearts · read 974 times

DevManchester, UK · 2 June 2025
about a year ago

BCH send a peak table rather than a single percentage, and working through one properly has changed how I read every other document I have.

A headline figure is a summary of the table. The table shows you what else was there and roughly how much of it. If a document only gives you the summary, you are being asked to trust somebody else's reading of the thing they are not showing you.

I am not saying a single figure is dishonest. I am saying a table is more information, and more information is what I want when I cannot inspect anything myself.

24

NilsUppsala, SE
#1

Yes. And the impurity profile is often more informative than the headline, because it tells you something about the process rather than about one batch.

18

TamGlasgow, UK
#2

I asked for the batch record with the lot code in the subject line and had it back the same day. Two orders, same result.

10

CasperOdense, DK
#3

Reading Dev, I recognised more of that than I expected to. I have spent two years comparing headline numbers across suppliers as though they were the same measurement.

12

BeaDublin, IE
#4

The documentation being complete first time is the part that matters to me. I do not have the energy to chase paperwork on top of everything else.

8

SunilFacilitatorBirmingham, UK
#5

Holding a boundary as I do on every thread in this circle: we describe what a document contains and we do not tell anybody what to do with the material. Sourcing outside a prescription carries a risk none of us can remove, and a good table does not touch it.

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