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LA

u/laila_yilmaz

Contributes reviews on supplier material. Based in Medellín.

member · joined 13 Apr 2025

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Overview — page 3 of 3

comment on ferritin — 15 things I got wrong before I got it right in c/bloodwork · 191 points · 1 year ago

baseline before you start is worth more than any later panel

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comment on ferritin — 15 things I got wrong before I got it right in c/bloodwork · 38 points · 1 year ago

Agreed on assay changes. A lab switching platforms between your draws is invisible unless you ask.

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comment on [PSA] GIP is not what most of this community thinks it is in c/tirzepatide · 31 points · 1 year ago

a lot of people plateau nicely at 10mg and never need 15

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comment on three years of beginner threads, summarised so you do not have to read them in c/newbiequestions · 32 points · 1 year ago

Asked what a COA was in my first week. Somebody linked the explainer and I have been reading them ever since.

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comment on [Discussion] purity is doing more work than we give it credit for in c/coa · -9 points · 1 year ago

UV at 214nm sees the peptide bond and picks up almost everything; at 280nm you are looking at aromatics only. Which wavelength the number came from is part of the number.

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comment on why does nobody talk about water content in c/coa · 518 points · 1 year ago

Correction: that is net peptide content, not purity. Different number, different meaning, and the document says so if you read the row label.

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comment on genuine question about tirzepatide that I am slightly embarrassed to ask in c/tirzepatide · 3 points · 1 year ago

2.5 is the starter dose and it is not meant to be the dose that works

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comment on genuine question about tirzepatide that I am slightly embarrassed to ask in c/tirzepatide · 71 points · 1 year ago

stepping every four weeks is a ceiling on speed, not a schedule you must hit

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comment on help me understand 15mg, I have read the wiki twice in c/tirzepatide · 1 points · 1 year ago

Careful with "everyone tolerates it better". The people it did not suit stop posting, which makes this board look calmer than the drug is.

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comment on [Lab] WWB survo — Medutest came back 99.2% against a claimed 98.5% in c/survodutide · 0 points · 1 year ago

Assumed the weight numbers were the point and was corrected.

whois_wanda is right that biopsy and imaging endpoints are not interchangeable.

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comment on [Question] is 95.1% actually fine or am I being sold a rounding error in c/scamalerts · 159 points · 1 year ago

Cloned storefronts copy assets, layout and testimonial text. What they cannot easily copy is a batch-specific document that ties to a lot you can then have tested independently.

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comment on unpopular opinion: most of what gets said here about first time is guesswork in c/newbiequestions · 80 points · 1 year ago

A certificate of analysis is a document describing one batch: what was tested, by what method, and what the result was.

nora_lundgren has explained this better than the wiki does, which is saying something.

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comment on the ApoB thing finally clicked for me and I want to write it down in c/bloodwork · 34 points · 1 year ago

Same view — ApoB if you add one thing. It answers a question the standard panel only gestures at.

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comment on glucagon is the most under-discussed thing on this board in c/survodutide · 1 points · 1 year ago

Disagreeing with this bit: that number comes from a different programme with a different population.

kaia_wojcik is right that biopsy and imaging endpoints are not interchangeable.

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comment on glucagon is the most under-discussed thing on this board in c/survodutide · 1 points · 1 year ago

biopsy-confirmed is not the same as imaging-suggested

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comment on how much of what we believe about batch actually comes from purity threads in c/coa · 338 points · 1 year ago

Net peptide content is the fraction of the powder that is actually peptide once counterion, water and residual solvent are accounted for. A 99% pure acetate salt can still be about 85% peptide by mass.

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comment on [Lab] split one vial across VendorInvestigate and PeptideMeter — 97.2% and 98.4% in c/coa · 34 points · 1 year ago

HPLC-UV and LC-MS answer different questions

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comment on [Lab] split one vial across VendorInvestigate and PeptideMeter — 97.2% and 98.4% in c/coa · 79 points · 1 year ago

Small fix — 214nm, not 280nm. It matters here because the impurity you are asking about barely absorbs at the longer wavelength.

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comment on [Discussion] the GIP advice in here is 2 years out of date in c/tirzepatide · 70 points · 1 year ago

hold the dose that works, the ladder is not a leaderboard

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comment on [Lab] split one vial across VendorInvestigate and PeptideMeter — 97.2% and 96.8% in c/coa · 7 points · 1 year ago

The PDF creation date being later than the analysis date is usually a re-issue or a re-export. It is worth one question and it is not evidence of anything on its own.

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comment on small win: glucagon stopped being a problem at week 36 in c/survodutide · 1 points · 2 years ago

not approved anywhere, and the boards forget that constantly

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comment on help me understand first time, I have read the wiki twice in c/newbiequestions · 184 points · 2 years ago

Asked what a COA was in my first week. Somebody linked the explainer and I have been reading them ever since.

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comment on help me understand first time, I have read the wiki twice in c/newbiequestions · 38 points · 2 years ago

Week 8 for me was completely flat and I was convinced something was wrong. It was not. Month two was where everything happened.

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comment on help me understand first time, I have read the wiki twice in c/newbiequestions · 75 points · 2 years ago

Which country? Half the answers here only apply in one place.

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comment on how much of what we believe about batch actually comes from related substances threads in c/coa · 296 points · 2 years ago

Did you ask for the batch-specific document, or is this the catalogue one?

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comment on [Meta] the tirzepatide rule is doing its job and people should stop complaining in c/tirzepatide · 1 points · 2 years ago

2.5 is the starter dose and it is not meant to be the dose that works

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comment on what changed for me between month 4 and month 12 in c/newbiequestions · 122 points · 2 years ago

bacteriostatic water has a preservative, sterile water does not

Adding the one habit worth starting today: write the concentration on the vial.

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comment on reading area percent threads from 2024 and half of it aged badly in c/coa · 249 points · 2 years ago

HPLC-UV and LC-MS answer different questions

Agreed, and the practical version is: ask for the itemised table. If it exists, you get it.

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comment on [Discussion] can we stop arguing about batch until somebody posts a number in c/coa · 34 points · 2 years ago

Sent one vial to Medutest and PeptideMeter.

Agreed, and the practical version is: ask for the itemised table. If it exists, you get it.

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comment on [Lab] 16th independent test on WXT — 99.3% on a claimed 98.5%, and the trend is the interesting part in c/coa · 0 points · 2 years ago

That is the catalogue certificate rather than the batch-specific one. Same layout, completely different status.

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