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ferritin — 15 things I got wrong before I got it right
ferritin — 15 things I got wrong before I got it right. It is the sort of thing everyone half-believes and nobody writes down. ApoB counts atherogenic particles rather…
u/bac_water_bandit
Bacteriostatic water, 0.9% benzyl alcohol, 28 days, room temp after first puncture. Write it down.
long-standing contributor · reconstitution · joined 2 Dec 2023
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Overview — page 2 of 2
comment on ferritin — 15 things I got wrong before I got it right in c/bloodwork · 305 points · 1 year ago
nothing on this board interprets your results for you
comment on ferritin — 15 things I got wrong before I got it right in c/bloodwork · 172 points · 1 year ago
Have you taken this to whoever ordered it?
comment on how much of what we believe about bacteriostatic water actually comes from units threads in c/reconstitution · 7 points · 1 year ago
Left up and flaired Explainer — the numbers in this one check out.
comment on help me understand dead space, I have read the wiki twice in c/reconstitution · 65 points · 1 year ago
Reminder: this board does maths, not dosing. Nobody here tells another member what amount to take.
comment on help me understand dead space, I have read the wiki twice in c/reconstitution · 135 points · 1 year ago
Why "more water" keeps confusing people, including me for a month.
The vial contains a fixed amount of peptide. Water changes nothing about that amount. What it changes is concentration, and concentration is the divisor between the dose you want and the volume you draw.
So doubling the water halves the concentration and doubles the units for the same dose. Nothing is diluted in any sense that matters; you are simply reading a bigger number off the same barrel. Pick the water volume that puts your usual dose on a whole number of units and life gets easier.
comment on how much of what we believe about ferritin actually comes from bloodwork threads in c/bloodwork · 27 points · 1 year ago
baseline before you start is worth more than any later panel
comment on [Discussion] can we stop arguing about reconstitution until somebody posts a number in c/reconstitution · 38 points · 1 year ago
aim the stream at the glass wall, not at the cake
comment on stalled for 15 weeks at 1.7mg and I refuse to panic this time in c/bloodwork · 1 points · 1 year ago
the trend line matters more than any single value
comment on why does nobody talk about reconstitution in c/reconstitution · 21 points · 1 year ago
Correction: that gives 100 units, not what you have written. 5mg into 2mL is 2.5mg/mL and the division follows from there.
comment on [Discussion] the insulin syringe advice in here is 2 years out of date in c/reconstitution · 9 points · 1 year ago
Bacteriostatic or plain sterile water?
comment on [Discussion] the insulin syringe advice in here is 2 years out of date in c/reconstitution · 10 points · 1 year ago
Left up and flaired Explainer — the numbers in this one check out.
comment on [Discussion] mg/mL is doing more work than we give it credit for in c/reconstitution · 31 points · 2 years ago
Working has to be shown on arithmetic posts. Added a note asking for it rather than removing this one.
comment on [Meta] proposal — a flair for units posts in c/reconstitution · 344 points · 2 years ago
Working has to be shown on arithmetic posts. Added a note asking for it rather than removing this one.
comment on [Meta] the dead space rule is doing its job and people should stop complaining in c/reconstitution · 19 points · 2 years ago
Left up and flaired Explainer — the numbers in this one check out.
comment on [Discussion] the mg/mL advice in here is 3 years out of date in c/reconstitution · 122 points · 2 years ago
Left up and flaired Explainer — the numbers in this one check out.
comment on [Discussion] the mg/mL advice in here is 3 years out of date in c/reconstitution · 28 points · 2 years ago
The arithmetic in full: concentration is mass over volume, so 5mg into 1mL gives 5mg/mL. A U-100 syringe is graduated at 100 units per millilitre, so 1mg is 1 divided by 5 millilitres, which is 20 units.
comment on [Discussion] the mg/mL advice in here is 3 years out of date in c/reconstitution · 27 points · 2 years ago
This. Showing the working is the fastest way for somebody else to spot the mistake.
comment on [Discussion] we are measuring mg/mL at the wrong time and calling it noise in c/reconstitution · 28 points · 2 years ago
Bacteriostatic or plain sterile water?
comment on ALT — 4 things I got wrong before I got it right in c/bloodwork · 337 points · 2 years ago
weight loss itself moves several of these independently
comment on [Results] 78 weeks on 12.5mg, full numbers, ask me anything boring in c/bloodwork · -7 points · 2 years ago
That is a non-fasting value and the interval you are comparing it against is a fasting one.
comment on bacteriostatic water — 16 things I got wrong before I got it right in c/reconstitution · 349 points · 2 years ago
Corrected the concentration in the title, which contradicted the body. Nothing else touched.
comment on genuine question about reconstitution that I am slightly embarrassed to ask in c/reconstitution · 5 points · 2 years ago
That is sterile water, not bacteriostatic. Same appearance, different product, and it matters for a multi-draw vial.