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ForumsLab Results & BiomarkersVitamin B12 monitoring — anyone have experience? Page 6

Vitamin B12 monitoring — anyone have experience?

TomTeleRx Tue, Jan 21, 2025 at 12:37 AM 32 replies 2,172 viewsPage 6 of 7
quinn_sf
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Jan 25, 2025 at 12:30 AM#26

Adding the numbers, since they settle part of this. For anyone reading later: the numbers in this thread are worth checking against a primary source before you act on them, including mine. Half the figures circulating in this community trace back to a secondary summary that dropped a qualifier.

8 6tane_welly, Dr.PathRoch, mona_PHX and 5 others
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KarenAZ_mom
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Jan 25, 2025 at 10:24 AM#27

One thing that is still open after VendorMark’s answer:

How would you tell the difference between that and the alternative explanation?

9 7pete_manc_UK, anna.melb_AU, mark_tokyo and 6 others
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Admin
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Jan 25, 2025 at 8:18 PM#28
quinn_sf said:
For anyone reading later: the numbers in this thread are worth checking against a primary source before you act on them, including mine.

This is where I part company with the consensus forming above. The objection nobody has made: this only works if the measurement is doing what we assume it is doing, and that assumption has not been tested here.

Correct me if the detail matters more than I have assumed.

10 8RegAffairsDC, BiostatsBrad, PeptideSynthNJ and 7 others
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matt_MKE
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Jan 26, 2025 at 6:12 AM#29
quinn_sf said:
For anyone reading later: the numbers in this thread are worth checking against a primary source before you act on them, including mine.

No disagreement, though the timescale matters more than the mechanism here. Most of what looks like a difference in kind turns out to be a difference in how long somebody waited.

Last edited: Jan 26, 2025 at 9:12 AM
11 9carl_compliance, DanielChem_CHI, marco_milano and 8 others
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TomTeleRx
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Jan 26, 2025 at 4:05 PM#30

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

Late follow-up. I did not do what was suggested, I did something adjacent, and it worked; posting the difference in case it matters to somebody.

Last edited: Jan 26, 2025 at 5:05 PM
33 6TrialNerd_Beth, HPLC_Greg, LibrarianMeg and 30 others
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