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ForumsCOA & Analytical TestingMass spectrometry for peptide identity verification — March 2026 Page 6

Mass spectrometry for peptide identity verification — March 2026

TirzTom Fri, Jan 9, 2026 at 3:52 PM 40 replies 1,536 viewsPage 6 of 8
alex_tucson
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Jan 31, 2026 at 5:07 PM#26
HPLC_Greg said:
One habit that pays for itself: post the method alongside the number.

No disagreement, though it depends on where somebody is starting from, and this thread has been assuming a starting point nobody stated.

13 11emily_PDX, Dr.SleepRoch, laura_annarbor and 10 others
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lisa_labSD
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Feb 3, 2026 at 11:04 AM#27
HPLC_Greg said:
One habit that pays for itself: post the method alongside the number.

Thank you for spelling out the reasoning rather than just the conclusion.

Last edited: Feb 3, 2026 at 2:04 PM
14 12maya_sedona, stefan_berlin, Dr.EM_Chicago and 11 others
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Dr.LipidDallas
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Feb 6, 2026 at 4:59 AM#28

Clinical perspective, offered as context rather than as advice. Most of what circulates confidently in this community traces back to one summary of one study, and the qualifier was dropped somewhere in the third retelling.

15 13cory_ATX, lori_vegas, Dr.PulmRoch and 12 others
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marcus_mpls
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Feb 8, 2026 at 10:53 PM#29
Dr.LipidDallas said:
Most of what circulates confidently in this community traces back to one summary of one study, and the qualifier was dropped somewhere in the third…

This is my experience too, for whatever a second data point is worth.

16 14Dr.PathRoch, mona_PHX, andrew_nyc and 13 others
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TirzTom
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Feb 11, 2026 at 4:45 PM#30

OP back with an update, since a thread like this is useless without one.

Update: I got the sleep and the intake sorted before deciding it was the drug, and most of the flatness went with them. Not all of it, and I am watching the rest.

38 11DeniseRN_TPA, SandraNC_45, Dr.EndoIndy and 35 others
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