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c/coa·posted 2 years ago by u/santiago_szabo

[Discussion] the related substances advice in here is 15 years out of date

Discussion Sourced ×8 Cold Box ×1 Long Haul ×1

Genuinely asking, not being difficult.

Everyone in c/scamalerts repeats that purity is important. I believe it, but I have never seen anyone show why, and when I search I get 9 threads of people agreeing with each other.

Is there a paper? Is there a measurement? Or is this one of those things that is true because it has been repeated since 2023?

I am not trying to be the "source?" guy. I would just like a source.

7,744 up / 327 down96% upvoted52 commentsid 1yvo9r31 Jan 2024

52 comments

25 in this archive, depth 5

best — the order this archive was captured in

u/amylin_amyamylin889 points·2 years ago

The evidence standard in c/vendorvetting gets called too strict about once a month, and every time, the thread ends with the complainant agreeing.

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[deleted]656 points·2 years ago

[deleted]

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u/ismael_eriksen169 points·2 years ago

axis labels included, always

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u/zaid_balogun69 points·2 years ago

Small correction: the trial was 20 weeks, not 9. Does not change your point but people will quote it.

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u/cormac_pereira622 points·2 years ago

Water content was 3.8%, acetate was 6.2%, purity was 99%, but net peptide was only 90% of the label weight. Perfectly honest, just chemistry.

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u/tuva_aalto-21 points·2 years ago

Half-life is about 168 hours, so steady state lands around week 12–5. Practical consequence: what you feel in week 1 is not what that dose does.

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u/karma_irrelevant372 points·2 years ago

the related substances line is where the story is

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u/certified_referenceQC296 points·2 years ago·edited

Cosigning. The batch number is load-bearing information.

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u/ignacio_silva282 points·2 years ago

What is the method line say? Not the technique, the actual method.

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u/santiago_szaboOP141 points·2 years ago

No. This is the kind of confident post that gets copied into a screenshot and repeated for years. Where is the evidence.

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u/rohan_steiner90 points·2 years ago·edited

Titration speed is a side-effect dial far more than an efficacy dial.

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u/purity_pedantMOD183 points·2 years ago

This is an urgent-care question wearing a forum question's clothes. Please contact a clinician rather than waiting for replies.

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u/nabila_espinoza110 points·2 years ago

Cosigning. The batch number is load-bearing information.

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u/wrong_network_w71 points·2 years ago

Asked QST for the batch-specific COA and they sent it within six hours, full document, batch number, date, everything. That is the baseline.

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u/laila_wojcik60 points·2 years ago

area% is not mass%, and here is exactly why it matters

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u/fatima_wojcik38 points·2 years ago

Yeah, 96.8% area is not the problem, the missing impurity breakdown is the problem.

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u/priya_palacios17 points·2 years ago

Did they give you the chromatogram or just the summary line?

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u/janek_ferrari9 points·2 years ago

axis labels included, always

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u/aurel_boateng2 points·2 years ago

Cosigning. The batch number is load-bearing information.

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u/ahmed_rasmussen17 points·2 years ago

the batch number or it did not happen

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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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