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u/blank_injection

Run a blank. Then run another blank. Then talk.

member · joined 26 Feb 2025

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comment on peak at 4.2 min, nobody can tell me what it is, ideas in c/hplc · 94 points · 1 days ago

the blank did not catch it because the blank was mobile phase, not bac water. run a bac-water blank as well when the sample was reconstituted.

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comment on [Lane Report] Shanghai → UK, DHL, quoted 7 days, actual 9, cold pack solid in c/intlshipping · 7 points · 2 days ago

Packaging is assessable on arrival with no equipment: rigid outer, no movement inside, the cold element sized to the transit rather than to the box.

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comment on bought a second-hand HPLC. worst best decision of my life. AMA in c/hplc · 63 points · 2 days ago

mine is a drawer now. i am not proud.

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comment on peak at 4.2 min, nobody can tell me what it is, ideas in c/hplc · 47 points · 3 days ago

run a blank. then run another blank. then post. i say this every week and it is finally load-bearing.

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comment on [PSA] no tracking numbers. they identify both ends. removed on sight. in c/intlshipping · 2 points · 5 days ago

rigid outer packaging is the cheapest quality signal there is

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comment on [Question] eGFR dropped 8 points during rapid loss, should i worry in c/bloodwork · 1 points · 5 days ago

one measurement is a point, two is a line, three is a trend

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comment on [Question] eGFR dropped 8 points during rapid loss, should i worry in c/bloodwork · 0 points · 5 days ago

Disagree with reading anything into that. One value, one morning, and you changed two other things in the same window.

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comment on [Discussion] reship policy is the most underrated vendor differentiator in c/intlshipping · 10 points · 14 days ago

That is the quoted lead time, not the observed transit. Both belong in the report and they are different columns.

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comment on my gallbladder came out at month 7 and i would still do it again in c/sideeffects · 36 points · 22 days ago

Constipation is mostly reduced intake plus reduced fluid, not a direct effect. That is why the boring fibre and water answer keeps working.

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comment on week 67 check-in — 10kg down, muscle cramps manageable, one thing confusing me in c/bloodwork · 2 points · 27 days ago

Cosigning on baseline. The panel I regret most is the one I did not take before starting.

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comment on Spain: carrier, and what it actually costs here in c/intlshipping · 2 points · 27 days ago

summer and winter are different lanes with the same name

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comment on anyone else notice hair loss kicking in around week 21 in c/sideeffects · 9 points · 1 months ago

Not convinced by that mechanism. Slowed gastric emptying explains fullness and reflux; it does not explain what you are describing.

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comment on [Discussion] the ALT advice in here is 2 years out of date in c/bloodwork · 8 points · 1 months ago

hydration status moves a surprising number of markers

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comment on the gallbladder question that gets asked weekly, answered properly in c/sideeffects · 42 points · 1 months ago

Cosigning the fibre and water answer. Unglamorous, free, and it fixed it for me inside a week.

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comment on reading ATTAIN threads from 2024 and half of it aged badly in c/orforglipron · 0 points · 1 months ago

Why "oral" is doing two completely different jobs in the sentences people write here.

This is the fact the whole board hangs on. Small molecule, not peptide.

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comment on [Discussion] can we stop arguing about transit time until somebody posts a number in c/intlshipping · 30 points · 2 months ago

Four observations is not a distribution.

Adding the field everyone forgets — the month. Without it the report is not comparable to anything.

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comment on stalled for 6 weeks at 2.5mg and I refuse to panic this time in c/bloodwork · -26 points · 2 months ago

The confounding problem, stated plainly, because this board keeps stepping on it.

Substantial weight loss moves lipids, liver enzymes, insulin sensitivity markers and several others in its own right. If you are losing weight while taking something, any change in those markers has at least two candidate explanations and you cannot separate them from your own panel.

What you can do is standardise, take a baseline, keep the series long, and be honest in your posts about what is and is not attributable. The threads that say "this compound did X to my ALT" almost never have the design to support the claim, mine included.

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comment on [Meta] proposal — a flair for lane posts in c/intlshipping · -20 points · 4 months ago

That is a packaging observation, not a transit observation. Worth posting, worth separating.

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comment on what changed for me between month 10 and month 18 in c/bloodwork · 1 points · 5 months ago

Took a baseline the week before starting purely because this board told me to. Best five minutes I have spent on this.

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comment on [Question] EMS — what am I missing here in c/intlshipping · 119 points · 5 months ago

The regional stock question, and why it is the first thing I ask now.

If a supplier holds the line you want in a warehouse in your own region, your order is a domestic shipment. No international leg, no clearance, a shorter cold exposure and a lead time in days rather than weeks. If they do not, it is an international shipment however it is described at checkout.

So the question is not "how fast do you ship" but "which lines do you hold in regional stock, and is the one I want among them". It is one email, the answer is usually a list, and it changes what to order and when — especially in summer.

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comment on reading sulphur burps threads from 2024 and half of it aged badly in c/sideeffects · 15 points · 5 months ago

hair shedding follows the weight loss, not the drug, and it stops

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comment on why does nobody talk about baseline labs in c/bloodwork · 0 points · 6 months 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 [Meta] the gallbladder rule is doing its job and people should stop complaining in c/sideeffects · 217 points · 6 months ago

The pattern almost everyone here describes, written out once so it can be linked.

A step up is followed by a rough window — commonly early fullness arriving the day after the shot and easing by day four, worst in the first fortnight, then flattening out. At a stable dose it usually settles further. Constipation and fatigue tend to track intake and fluid rather than the compound directly, which is why the unglamorous answers work.

What sits outside that pattern: severe pain, symptoms that appear from nowhere weeks into a stable dose, or anything getting worse rather than better over a month. None of that is a board question and none of us can answer it for you.

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comment on [Discussion] the lane advice in here is 2 years out of date in c/intlshipping · 63 points · 7 months ago

Where the time actually goes, which I got wrong for two years.

Total transit is first mile, international leg, customs clearance and last mile. I had been attributing everything to the international leg because that is the part with the exotic-sounding name.

When I finally logged the stages separately, the international leg was the most consistent part of the whole journey. The variance was in clearance and in the domestic delivery at my end — neither of which the supplier controls. That reframed how I read every lane report on this board, and it is why the table separates the stages.

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comment on [Discussion] the lane advice in here is 2 years out of date in c/intlshipping · 24 points · 7 months ago

A lane is an origin, a destination, a carrier and a season. Change any one and the distribution changes, which is why supplier-level shipping averages are close to meaningless.

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comment on [Question] how do you actually verify fatigue in c/sideeffects · 1 points · 7 months ago

write down when it starts and stops, the pattern is the useful part

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comment on [Lab] 15th independent test on WXT — 99.4% on a claimed 98.5%, and the trend is the interesting part in c/orforglipron · 0 points · 8 months ago

Correction: that is the oral peptide product, which is a different thing entirely.

This is the fact the whole board hangs on. Small molecule, not peptide.

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comment on genuine question about ALT that I am slightly embarrassed to ask in c/bloodwork · 2 points · 8 months ago

fasting state and time of day change more than people expect

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comment on [Question] how do you actually verify carrier in c/intlshipping · 56 points · 9 months ago

reship policy in writing before you order

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comment on small win: nausea stopped being a problem at week 35 in c/sideeffects · 4 points · 10 months ago

Is it every week or did it start at a particular dose?

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comment on [Meta] proposal — a flair for transit time posts in c/intlshipping · 60 points · 11 months ago

Same. QSC quoted 4 days on my lane and it landed at 5, which is exactly what you want from a quote.

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comment on help me understand gallbladder, I have read the wiki twice in c/sideeffects · 46 points · 11 months ago

Reflux was the one that got me. Stopped eating in the three hours before bed and it went from nightly to almost never.

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comment on help me understand gallbladder, I have read the wiki twice in c/sideeffects · 226 points · 11 months ago

Correcting my own comment above: I said day three and my log says day two. Same pattern, wrong day.

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comment on help me understand gallbladder, I have read the wiki twice in c/sideeffects · 102 points · 11 months ago

Correction: that is a known effect of reduced intake rather than a direct drug effect. The distinction matters because the fix is different.

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comment on reship — 19 things I got wrong before I got it right in c/intlshipping · 49 points · 11 months ago

11 days on a lane quoted at 5 is the shape you want

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comment on A1c — 9 things I got wrong before I got it right in c/bloodwork · 14 points · 1 year ago

hydration status moves a surprising number of markers

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comment on help me understand nausea, I have read the wiki twice in c/sideeffects · 264 points · 1 year ago

sulphur burps are unpleasant and they are not dangerous

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comment on ferritin — my 22-week log, condensed into one table in c/bloodwork · 0 points · 1 year ago

ApoB counts atherogenic particles rather than the cholesterol they carry, which is why it can diverge from LDL-C and why it is the addition most worth making.

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comment on [Discussion] ferritin is doing more work than we give it credit for in c/bloodwork · 89 points · 1 year ago

one measurement is a point, two is a line, three is a trend

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comment on anyone else notice lipids kicking in around week 9 in c/bloodwork · 113 points · 1 year ago

Is that the same assay, or did the lab change platforms?

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