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u/arne_restrepo

Contributes reviews on supplier material. Based in Osijek.

member · joined 14 May 2025

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comment on [Explainer] why 1mL syringes cause overdoses and 0.3mL ones do not in c/reconstitution · 306 points · 5 days ago

Bacteriostatic water contains benzyl alcohol as a preservative, which is what makes repeated entry into the same vial reasonable. Plain sterile water has no preservative.

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comment on week 2 and literally nothing has happened, is this normal in c/semaglutide · 9 points · 7 days ago

Yes. Week 89 is when almost everybody writes the "is it still working" post, and almost everybody is fine.

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comment on what is a COA and how do i know if it is real in c/newbiequestions · 2 points · 8 days ago

Not quite. Bacteriostatic and sterile water are different products and only one is intended for repeated entry.

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comment on what is a COA and how do i know if it is real in c/newbiequestions · 2 points · 9 days ago

Correction: the starting dose is a tolerance step rather than a treatment dose. The distinction is the answer to the question above.

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comment on [Math] someone check my arithmetic before i draw this up in c/reconstitution · 11 points · 10 days ago

The lyophilised cake displaces a small volume, so the true concentration is very slightly lower than the arithmetic suggests. It is a fraction of a percent and it is dwarfed by fill tolerance.

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comment on [Medutest] split one vial across two services, results within 0.9% in c/labresults · 4 points · 11 days ago

Have now spent more on testing than on some of the orders. No regrets — the log is the reason I can buy without agonising.

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comment on [Medutest] split one vial across two services, results within 0.9% in c/labresults · 1 points · 11 days ago

net peptide content if the report gives it, and say which you are quoting

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comment on how long until i should expect anything to change in c/newbiequestions · 24 points · 20 days ago

A certificate of analysis is a document describing one batch: what was tested, by what method, and what the result was. Its value depends entirely on whether it names the batch and the method.

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comment on silly question but which day of the week should i pick in c/newbiequestions · 0 points · 1 months ago

That is area percent from a certificate, not the amount of peptide in the vial. Two different numbers and a very common mix-up.

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comment on [Question] weight — what am I missing here in c/dosinglogs · -24 points · 1 months ago

log what you did, not what you meant to do

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comment on 23 months in and week one is still the thing I get wrong in c/newbiequestions · 17 points · 1 months ago

This is the answer.

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

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comment on STEP 1 was -14.9% average and i keep having to remind myself average means average in c/semaglutide · 115 points · 1 months ago

the ladder exists because the gut needs the time, not because the pharmacy likes paperwork

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comment on normal is the most under-discussed thing on this board in c/newbiequestions · 9 points · 1 months ago

Concentration is mass over volume, and a U-100 syringe reads 100 units per millilitre. Those two facts are the whole of the arithmetic this board keeps explaining.

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comment on normal is the most under-discussed thing on this board in c/newbiequestions · 31 points · 1 months ago

Appetite change and weight change are different measurements on different timescales. The first is usually noticed first and the second lags it.

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comment on how much of what we believe about mg/mL actually comes from insulin syringe threads in c/reconstitution · 2 points · 2 months ago

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

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comment on stalled for 11 weeks at 15mg and I refuse to panic this time in c/tapering · 25 points · 3 months ago

Small fix — you have described interval stretching and called it a taper. The exposure profiles differ.

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comment on 4 months in and plateau is still the thing I get wrong in c/semaglutide · 1 points · 3 months ago

Sat at 2.4mg for four months because it was doing the job. Everyone told me to go up. The one time I did, the only thing that changed was the early fullness.

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comment on three years of mg/mL threads, summarised so you do not have to read them in c/reconstitution · 8 points · 4 months ago

30mg into 3mL is 10mg/mL, and 2mg of that is 20 units

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comment on three years of dead space threads, summarised so you do not have to read them in c/reconstitution · 26 points · 4 months ago

reconstituting at a round concentration makes every later dose easy

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comment on three years of dead space threads, summarised so you do not have to read them in c/reconstitution · 63 points · 4 months ago

the number you write down is the number you will trust at 6am

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comment on does plateau actually matter or is it forum lore at this point in c/semaglutide · -30 points · 6 months ago

2.4 is a ceiling, not a target

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comment on week 59 check-in — 30kg down, nausea manageable, one thing confusing me in c/tapering · 5 points · 6 months ago

regain is the expected outcome and framing it as failure helps nobody

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comment on stalled for 21 weeks at 2.4mg and I refuse to panic this time in c/semaglutide · 126 points · 6 months ago

Week 33: 16kg down, food noise basically gone since about week 6, and the honest headline is that nothing dramatic happened. It was boring and it worked.

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comment on tried week one for 18 weeks. here is what happened. in c/newbiequestions · 4 points · 6 months ago

search first, but a repeat question is not a crime

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comment on weight — 23 things I got wrong before I got it right in c/dosinglogs · -26 points · 6 months ago

the column you will wish you had is sleep

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comment on [Lab] split one vial across VendorInvestigate and PeptideMeter — 99.1% and 96.8% in c/labresults · 82 points · 7 months ago

Date of analysis anchors the result to a manufacturing period. A two-year-old result is evidence about two years ago and should be read that way.

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comment on Ozempic: the version I wish someone had shown me in week 1 in c/semaglutide · 16 points · 7 months ago

the ladder exists because the gut needs the time, not because the pharmacy likes paperwork

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comment on [Results] 78 weeks, 16kg, and plateau was the hard part in c/semaglutide · 13 points · 7 months ago

protein first, then everything else gets easier

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comment on the dead space thing finally clicked for me and I want to write it down in c/reconstitution · 13 points · 7 months ago

label the vial with the date as well as the concentration

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comment on Medutest — 16 things I got wrong before I got it right in c/labresults · 124 points · 7 months ago

Agreed — the template exists because a result without the batch and the claim is unanchored.

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comment on the regain question that gets asked weekly, answered properly in c/tapering · 0 points · 8 months ago

Appetite is the proximal effect and weight is the lagging integrated outcome, which is why watching appetite gives you an earlier and more honest signal.

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comment on stalled for 22 weeks at 0.5mg and I refuse to panic this time in c/semaglutide · 2 points · 8 months ago

What did week 83 look like compared with this one? The month either side is the useful comparison.

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comment on nobody warned me about injection-site soreness and I would have liked the warning in c/semaglutide · 107 points · 8 months ago

Kept a log from week one and the single most useful column turned out to be waist, not weight.

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comment on [Results] 81 weeks, 20kg, and weekly dosing was the hard part in c/semaglutide · 18 points · 9 months ago

Careful. A four-week stall is inside normal variation and treating it as failure is how people escalate for no reason.

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comment on test results — 21 things I got wrong before I got it right in c/labresults · 68 points · 9 months ago

The template is vendor, compound, batch, service, claim, result, and who paid. Every one of those fields exists because a result missing it has been argued about here before.

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comment on reading weekly dosing threads from 2024 and half of it aged badly in c/semaglutide · 3 points · 9 months ago

Correcting myself from earlier in the thread: I said week 2 and it was week 11. Same shape, wrong number.

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comment on reading weekly dosing threads from 2024 and half of it aged badly in c/semaglutide · 39 points · 9 months ago

Are you measuring anything other than weight? Waist is usually the one that keeps moving.

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comment on reading weekly dosing threads from 2024 and half of it aged badly in c/semaglutide · 0 points · 9 months ago

Small correction: 2.4mg is the maintenance ceiling on the label, not the starting maintenance dose. The distinction matters for anyone reading this later.

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