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KA

u/karl_fischer_kev

Residual moisture matters more than you think. Water content is a purity story.

member · joined 8 Jun 2024

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Overview — page 2 of 3

comment on [Question] network — what am I missing here in c/cryptopay · 16 points · 5 months ago

I would not treat a delayed confirmation as evidence of anything at all. Chains have busy hours.

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comment on help me understand lean mass, I have read the wiki twice in c/glp1muscle · 47 points · 6 months ago

Started weighing protein rather than estimating it. The gap between what I thought and what I ate was embarrassing.

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comment on [Meta] proposal — a flair for protein posts in c/glp1muscle · -5 points · 6 months ago

DEXA has a meaningful coefficient of variation, and it differs between machines and protocols. Comparing scans from different clinics adds a systematic offset that is invisible on the report.

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comment on [Meta] the chargeback rule is doing its job and people should stop complaining in c/cryptopay · 241 points · 6 months ago

keep the hash, it is the only receipt that exists

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comment on [Discussion] bacteriostatic water is doing more work than we give it credit for in c/reconstitution · 35 points · 6 months ago

10mg into 1mL is 10mg/mL, and 1.5mg of that is 15 units

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comment on the chargeback question that gets asked weekly, answered properly in c/cryptopay · 64 points · 7 months ago

the same token exists on several chains and they are not interchangeable

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comment on [PSA] DEXA is not what most of this community thinks it is in c/glp1muscle · 28 points · 7 months ago

Lost slower for six months deliberately and my composition change was not obviously different. Training was what mattered.

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comment on [PSA] DEXA is not what most of this community thinks it is in c/glp1muscle · 21 points · 7 months ago

Some lean mass loss accompanies weight loss in any deficit. Resistance training and adequate protein intake are the two interventions with the best evidence for limiting the proportion.

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comment on [Discussion] dead space is doing more work than we give it credit for in c/reconstitution · 200 points · 7 months 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 genuine question about ApoB that I am slightly embarrassed to ask in c/bloodwork · 41 points · 7 months ago

That comparison crosses two labs with different assays. The difference you are describing may be the method.

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comment on three years of protein threads, summarised so you do not have to read them in c/glp1muscle · 22 points · 7 months ago

Cosigning that protein gets harder precisely when appetite drops. That is the actual difficulty and it is logistical.

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comment on week 31 check-in — 11kg down, sulphur burps manageable, one thing confusing me in c/bloodwork · 10 points · 7 months ago

How to make a panel worth comparing, which is most of the value people leave on the table.

Standardise the conditions: same lab, same fasting state, same rough time of day, same point in the week, similar hydration. Take a baseline before you change anything. Repeat any surprising value before acting on it. Change one thing at a time if you want to attribute anything to it.

Do that and a year of panels is a trend. Skip it and a year of panels is a collection of unrelated mornings, which is what most of the alarmed posts here are actually describing.

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comment on [Discussion] ApoB is doing more work than we give it credit for in c/bloodwork · 25 points · 8 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 TSH" almost never have the design to support the claim, mine included.

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comment on is it normal to get reflux at week 68 in c/glp1muscle · 37 points · 9 months ago

DEXA has a meaningful coefficient of variation, and it differs between machines and protocols. Comparing scans from different clinics adds a systematic offset that is invisible on the report.

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comment on [Meta] the FLOW rule is doing its job and people should stop complaining in c/trialwatch · 4 points · 9 months ago

Cardiovascular outcome trials are powered for events, not for weight, and are typically run in a different population with different inclusion criteria. Reading a weight number out of one is reading a secondary endpoint.

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comment on unpopular opinion: most of what gets said here about mg/mL is guesswork in c/reconstitution · -3 points · 9 months ago

The whole calculation, once, with real numbers.

You have a 5mg vial. You add 3mL of bacteriostatic water. Concentration is mass over volume: 1.67mg/mL. A U-100 insulin syringe is graduated at 100 units per millilitre, so one unit is 0.01mL.

To draw 1.5mg you need 1.5 divided by 1.67 millilitres, which is 90 units on the barrel. Write "1.67mg/mL" on the vial in marker before you put it away, and you never have to do this again for that vial.

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comment on what would you tell week-1 you about contraception in c/glp1women · 6 points · 10 months ago

Not convinced by the attribution. That pattern tracks the cycle in your own log more closely than it tracks the dose.

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comment on [Question] how do you actually verify SURPASS in c/trialwatch · 15 points · 10 months ago

phase 2 finds a dose, phase 3 measures the effect

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comment on three years of SURMOUNT threads, summarised so you do not have to read them in c/trialwatch · 1 points · 10 months ago

Discontinuation rates are a tolerability result. A trial with a strong efficacy number and heavy discontinuation is telling you two things and people only quote one.

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comment on tracking — 17 things I got wrong before I got it right in c/dosinglogs · 107 points · 10 months ago

Wrote the concentration into the log as well as on the vial. Have referred back to it more than once.

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comment on tracking — 17 things I got wrong before I got it right in c/dosinglogs · 0 points · 10 months ago

Are the missed weeks in there as blanks or dropped entirely?

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comment on the STEP thing finally clicked for me and I want to write it down in c/trialwatch · 4 points · 11 months ago

This. Intention-to-treat versus completer analysis routinely moves the headline by several points.

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comment on unpopular opinion: most of what gets said here about dead space is guesswork in c/reconstitution · 12 points · 11 months ago

That only works if the fill weight is exactly the label weight, and it usually is not exactly anything.

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comment on [Question] Canada — has anyone got a straight answer on escrow in c/cryptopay · 53 points · 11 months ago

Rate quotes expire because the underlying rate moves. A short expiry is ordinary; urgency about your decision is a separate signal and should be read separately.

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comment on [Discussion] can we stop arguing about TRIUMPH until somebody posts a number in c/trialwatch · 9 points · 1 year ago

check who the comparator was before you compare anything

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comment on [Discussion] can we stop arguing about TRIUMPH until somebody posts a number in c/trialwatch · 15 points · 1 year ago

trial populations get support that nobody on this board gets

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comment on resistance training — 15 things I got wrong before I got it right in c/glp1muscle · 1 points · 1 year ago

lean mass loss during weight loss is expected, the question is how much

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comment on contraception — 16 things I got wrong before I got it right in c/glp1women · 75 points · 1 year ago

Small fix — insulin resistance is a feature commonly seen in PCOS, not a synonym for it.

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comment on units — 21 things I got wrong before I got it right in c/reconstitution · 51 points · 1 year 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 the insulin syringe question that gets asked weekly, answered properly in c/reconstitution · 2 points · 1 year ago

Agreed — units are volume. Once that lands, the rest of the arithmetic is one division.

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comment on [Vendor] FGP order #12 — Germany, 4 days, no drama, receipts inside in c/cryptopay · 104 points · 1 year ago

Which networks did they list as accepted?

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comment on 5 months in and PCOS is still the thing I get wrong in c/glp1women · 92 points · 1 year ago

I would not read one person’s cycle-linked experience as a general pattern. The variation here is enormous.

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comment on my ferritin moved and I cannot work out whether FFMI is why in c/glp1muscle · 4 points · 1 year ago

Right — strength retention is a free proxy and it tracks better than most people expect.

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comment on reading resistance training threads from 2024 and half of it aged badly in c/glp1muscle · 13 points · 1 year ago

Fat-free mass index is a ratio of fat-free mass to height squared. It moves when either term does, which makes it awkward to interpret during active weight change.

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comment on help me understand ALT, I have read the wiki twice in c/bloodwork · 0 points · 1 year ago

Yes. Repeat before you react. Almost every alarming single value I have posted here regressed on the repeat.

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comment on the UK: network, and what it actually costs here in c/cryptopay · 1 points · 1 year ago

Memo requirements are chain-specific. The chain you are describing does not use one.

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comment on [Results] 39 weeks on 12.5mg, full numbers, ask me anything boring in c/glp1muscle · 1 points · 1 year ago

grip strength and lift numbers are cheap longitudinal markers

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comment on my fasting insulin moved and I cannot work out whether contraception is why in c/glp1women · 6 points · 1 year ago

fertility can change with weight loss and that surprises people

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comment on [Discussion] TRIUMPH is doing more work than we give it credit for in c/trialwatch · 38 points · 1 year ago

What was the discontinuation rate?

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