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ForumsCOA & Analytical TestingHow to read a Certificate of Analysis — complete guide Page 11

How to read a Certificate of Analysis — complete guide

COA_Karl Mon, Feb 26, 2024 at 4:00 PM 245 replies 11,691 viewsPage 11 of 20
dave_SLC
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Mar 16, 2024 at 11:57 PM#51
PeptideSynthNJ said:
One habit that pays for itself: post the method alongside the number.

True, with the qualification that this is a self-selected group. The people for whom it did not work post less, and that shapes everything we think we know.

9 7mike_mealprep, NicoleRaleigh, james_edin and 6 others
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Dr.RenalNash
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Mar 17, 2024 at 11:31 AM#52
PeptideSynthNJ said:
One habit that pays for itself: post the method alongside the number.

Saving this. It is the first explanation that did not require me to already understand it. Taking it to my next appointment.

10 8pam_stl, wei_SG, cory_ATX and 7 others
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Dr.BariatricHTX
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Mar 17, 2024 at 11:05 PM#53

Adding the clinical framing, because it changes how the question reads. The distinction that resolves most of these threads is between what is true on average and what is true for one person. Both are real; they answer different questions and get quoted as if they were the same one.

11 9Dr.EM_Chicago, pete_RVA, CarlaRPh_TPA and 8 others
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sophie_paris
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Mar 18, 2024 at 10:39 AM#54
Dr.BariatricHTX said:
The distinction that resolves most of these threads is between what is true on average and what is true for one person.

Second this.

Last edited: Mar 18, 2024 at 3:39 PM
12 10AussieAnna, BethLabQueen, ChrisMacros and 9 others
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AmyNC_wife
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Mar 18, 2024 at 10:12 PM#55
Dr.BariatricHTX said:
The distinction that resolves most of these threads is between what is true on average and what is true for one person.

There is a second half to this that has not been said yet. Start from the measurement rather than the conclusion. Almost every disagreement here turns out to be two people measuring different things and comparing the numbers anyway.

13 11Dr.KarenChen, Dr.NateNeph, PharmD_Rodriguez and 10 others
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