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u/marisol_frisk

Contributes reviews on supplier material. Based in Wrocław.

member · joined 14 May 2025

32,524post karma
9,327comment karma
12submissions
155comments

comment on [Sceptic] every new three-letter analog needs a data table before a hype thread in c/researchpeptides · 43 points · 2 days ago

Agreed that thin testing here says something about the members, not about the material.

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comment on [Method] the gradient everyone uses for sema and why it under-resolves the des-amido in c/hplc · 0 points · 3 days ago

axis labels or the trace is decoration

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comment on [Explainer] why 1mL syringes cause overdoses and 0.3mL ones do not in c/reconstitution · 29 points · 3 days ago

Asked HJ what volume they reconstitute to for their own stability testing and they answered in one line. Useful thing to know.

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comment on sterile water is not bacteriostatic water and it is not close in c/reconstitution · 105 points · 5 days ago

I would not round that figure. At 5mg/mL a rounding error of two units is a real fraction of the intended amount.

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comment on [Explainer] area% is not mass% and here is exactly why it matters in c/coa · 0 points · 6 days 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 [Country] ES — private receta, pharmacy stock, and the August problem in c/glp1eu · 2 points · 7 days ago

the EMA authorises, member states decide who pays

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comment on [Pattern] the nine scams. that is it. there are only nine. in c/scamalerts · 4 points · 10 days ago

Lost money once, years ago, to a shop that pushed hard for a decision the same day. Every time I see that pressure now I close the tab.

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comment on [Long Term] found my lowest effective dose by going down, not up in c/maintenancephase · 105 points · 11 days ago

the goal weight you picked at week 1 was a guess

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comment on [PSA] EMA notice out, national agencies will lag by weeks in c/glp1eu · 1 points · 11 days ago

Compared prices across two neighbouring countries and found the difference was mostly pack size once I normalised it.

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comment on [Announcement] sponsor disclosure, in full, again, because someone asked in c/meta · 6 points · 11 days ago

A rule-change proposal needs replacement wording because that is what can be evaluated. Without it there is nothing to compare against the current text.

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comment on [PSA] EMA notice out, national agencies will lag by weeks in c/glp1eu · 6 points · 13 days ago

a prescription from one member state is not automatically valid in another

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comment on [Question] does anyone actually feel "done" or is that not a thing in c/maintenancephase · 10 points · 14 days ago

Maintenance is the phase with the least published guidance and the most individual variation, which is precisely why board consensus here is worth less than usual.

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comment on reconstituted at 1mL instead of 2mL and caught it before injecting. lucky. in c/reconstitution · 50 points · 17 days ago

aim the stream at the glass wall, not at the cake

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comment on [Question] what is a reasonable system suitability RSD for this work in c/hplc · 73 points · 17 days ago

I would not blame the sample yet. Everything you have described is consistent with the column rather than the vial.

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comment on reimbursement is the most under-discussed thing on this board in c/glp1eu · 5 points · 19 days ago

pharmacy margins are regulated differently in each country

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comment on am I the only one who found hepatic fat harder than the injections in c/survodutide · 19 points · 19 days ago

Asked here what the difference was between the imaging and biopsy endpoints and got a genuinely excellent answer.

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comment on someone explain units to me like I have not read a paper in years in c/reconstitution · -27 points · 23 days ago

Are you accounting for the powder volume, or is that where the confusion is?

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comment on how do i tell an HPLC-UV COA from an LC-MS one at a glance in c/coa · 1 points · 26 days ago

Yes — and the reason to ask for the whole page is that the interesting parts are the ones people crop out to fit a screenshot.

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comment on method development — 14 things I got wrong before I got it right in c/hplc · 1 points · 29 days ago

Can you post the trace with the axes labelled?

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comment on [Resolved] accused a vendor of a fake COA. i was wrong. correcting the record. in c/scamalerts · 40 points · 1 months ago

never accuse an individual, describe what happened to you

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comment on identity and quantity are two questions and most COAs answer one in c/coa · 39 points · 1 months ago

Careful — "the metadata looks odd" is a reason to ask a question, not a conclusion. Re-issues are ordinary.

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comment on [PSA] research peptides are not what most of this community thinks it is in c/researchpeptides · 4 points · 1 months ago

handling and storage vary enormously across this catalogue

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comment on [Confirmed] site copied our own wiki text word for word to look legitimate in c/scamalerts · 18 points · 1 months ago

Domain age, registrar and certificate issuance date are all public and take about a minute to check. A site claiming years of history on a months-old domain is the cheapest signal available.

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comment on the bacteriostatic water thing finally clicked for me and I want to write it down in c/reconstitution · 0 points · 1 months ago

Adding more water does not change how much peptide is in the vial. It changes the concentration, which changes the volume you draw for the same amount. That is the entire relationship.

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comment on [Rules] no referral links. not once. not ever. permanent. in c/meta · 2 points · 1 months ago

The evidence standard on the vendor boards requires a document, a date or a named service behind any claim about a supplier. It is what makes those threads worth reading years later.

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comment on three years of glucagon threads, summarised so you do not have to read them in c/survodutide · 21 points · 1 months ago

biopsy-confirmed is not the same as imaging-suggested

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comment on three years of glucagon threads, summarised so you do not have to read them in c/survodutide · 24 points · 1 months ago

Assumed the weight numbers were the point and was corrected. They are secondary to what this is being developed for.

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comment on [Meta] the goal weight rule is doing its job and people should stop complaining in c/maintenancephase · 33 points · 1 months ago

The habits from the losing phase are what carry it now. That is not inspirational, it is just what happened.

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comment on stopped: the version I wish someone had shown me in week 1 in c/darkspot · 38 points · 1 months ago

That reads as a warning about a documented supplier and the events you describe are about a shop nobody has any record of.

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comment on [Question] how do you actually verify EU in c/glp1eu · 1 points · 1 months ago

a prescription from one member state is not automatically valid in another

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comment on unpopular opinion: most of what gets said here about lowest effective dose is guesswork in c/maintenancephase · 6 points · 2 months ago

Agreed that a few kilos of drift is ordinary. Weight is not a fixed number even for people who have never taken anything.

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comment on someone explain thymosin to me like I have not read a paper in years in c/researchpeptides · 10 points · 2 months ago

Correction: that name covers two different molecules and the thread has been discussing both as one.

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comment on unpopular opinion: most of what gets said here about HPLC is guesswork in c/hplc · 159 points · 2 months ago

report the method or do not report the number

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comment on help me understand COA, I have read the wiki twice in c/coa · 40 points · 2 months 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 does mg/mL actually matter or is it forum lore at this point in c/reconstitution · 352 points · 2 months ago

The arithmetic in full: concentration is mass over volume, so 15mg into 2mL gives 7.5mg/mL. A U-100 syringe is graduated at 100 units per millilitre, so 0.75mg is 0.75 divided by 7.5 millilitres, which is 10 units.

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comment on [Discussion] can we stop arguing about cloned site until somebody posts a number in c/scamalerts · -24 points · 2 months ago

never accuse an individual, describe what happened to you

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comment on why does nobody talk about dual agonist in c/survodutide · 7 points · 2 months ago

That is an escalation schedule for an unapproved compound and this board does not host those.

Adding the standing caveat — unapproved compound, research material is not for human use.

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comment on unpopular opinion: most of what gets said here about rules are guesswork in c/meta · 70 points · 2 months ago

The evidence standard on the vendor boards requires a document, a date or a named service behind any claim about a supplier. It is what makes those threads worth reading years later.

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