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c/coa·posted 2 months ago by u/isabela_nilsen

is it normal to get the food-noise thing at week 40

COA Sourced ×3 The Quiet One ×2

Week 57 update. 43kg down from the start, reflux basically gone since about week 14.

Things that worked: consistency, protein at breakfast, walking more than I want to. Things that did not: everything I bought on the internet to help with reflux.

The part that surprised me is how much of this is admin. Ordering, storing, logging, remembering. Nobody mentions that the hard bit is not the drug, it is the routine.

Happy to answer anything. Please do not ask me what dose you should be on.

2,444 up / 104 down96% upvoted46 commentsid 10jye920 May 2026

46 comments

28 in this archive, depth 3

best — the order this archive was captured in

u/purity_pedantMOD163 points·2 months ago

Flair changed to match the content. Read the sidebar before posting next time and we are square.

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u/ahmed_rasmussen51 points·2 months ago

Not to be pedantic but area percent and related substances are being used interchangeably and they are not interchangeable in real life.

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u/sig_figs_sammod · analytical46 points·2 months ago

Flair changed to match the content.

Disagree on that part. 93.7% and 99.3% on the same vial is normal.

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u/zeynep_zielinski59 points·2 months ago

Slight fix: the number was 99.0, not 98.9. Decimal point, but a fairly consequential one.

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u/kavya_verhoeven-28 points·2 months ago

Metadata check caught a COA that was created in a browser four months after the analysis date. Not evidence of fraud, but worth flagging to JEEP.

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u/isabela_nilsenOP1 point·2 months ago

Sceptical. If this were true we would see it reflected in the data and we do not.

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[removed]1 point·2 months ago

[removed by moderator]

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u/anya_moreau63 points·2 months ago

Mechanistically the bit that matters is batch. It explains most of the early profile and a decent chunk of the outcome.

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u/yannick_haddad16 points·2 months ago

no "is this good?" without saying what the compound and claimed purity are

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u/isabela_nilsenOP23 points·2 months ago

Mechanistically the bit that matters is batch.

Disagree on that part. 93.7% and 99.3% on the same vial is normal.

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u/tuva_aalto8 points·2 months ago

the related substances line is where the story is

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u/santiago_szabo16 points·2 months ago

Water content on the document? That affects your concentration math.

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u/step_therapy_s39 points·2 months ago·edited

axis labels included, always

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u/meera_sandvik10 points·2 months ago

Respectfully this is a sample of one presented as a finding.

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u/liv_nkemelu2 points·2 months ago

the related substances line is where the story is

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u/tidy_vialdrawer_watch30 points·2 months ago

The confident tone is doing a lot of work that the evidence is not.

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u/isabela_nilsenOP23 points·2 months ago

The confident tone is doing a lot of work that the evidence is not.

Yes, exactly this, and it is the bit that took me 31 weeks to accept.

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u/liv_nkemelu8 points·2 months ago

Disagree. What you are describing is consistent with area percent, not with what you concluded.

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u/yannick_haddad5 points·2 months ago

Small correction: the trial was 15 weeks, not 22. Does not change your point but people will quote it.

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u/yara_antonsen16 points·2 months ago

redact your own name, not the vendor's batch details

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u/laila_yilmaz13 points·2 months ago

This is the correct framing. The COA structure matters as much as the number.

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u/dead_space_doug22 points·2 months ago

Water content matters more than people think. If a vial is carrying residual moisture, your "10mg" is not 10mg of peptide.

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u/karma_irrelevant6 points·2 months ago

chromatogram or it did not happen

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u/ghrp_history3 points·2 months ago

chromatogram or it did not happen

Counter-anecdote: opposite result, same dose. Which mostly tells us the variance is huge.

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u/bastian_moreau13 points·2 months ago

no "is this good?" without saying what the compound and claimed purity are

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u/ignacio_silva7 points·2 months ago

no "is this good?" without saying what the compound and claimed purity are

Adding to this: certificate of analysis is doing more work than the comment implies.

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u/emeka_chowdhury2 points·2 months ago

This is the "correlation is mechanism" thing again. You changed three variables at once.

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u/marisol_frisk8 points·2 months ago

post the whole document, not the headline number

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About c/coa

How to read a certificate of analysis and what it does and does not tell you. Area% versus mass%, identity versus quantity, water content, related substances, acetate counterions, and the difference between a vendor-supplied COA and an independent test on the vial you actually received.

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  1. Post the full document. Cropped COAs that hide the batch number or date get removed.
  2. Redact your own name and order id, not the vendor's batch details.
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