[Discussion] bacteriostatic water is doing more work than we give it credit for
Quick one. Canada here.
concentration works very differently where I live than in the threads that dominate the front page, and I keep seeing people confidently given advice that simply does not apply outside the US.
Specifics: the route I used took 24 weeks and cost roughly what I expected. The admin was worse than the cost. The thing that would have saved me the most time was knowing which document to ask for at the start.
Happy to answer questions from anyone in the same jurisdiction.
best — the order this archive was captured in
u-100 syringe, not u-40, or your math is off by factor of 15
Two vials, two different concentrations, forgot which was which, almost made a 19 times error. Now I label everything.
I am going to push back on this slightly.
never post a calculation as advice without stating the concentration
more water means more units for the same dose, which means finer resolution
dead space is real and the syringe matters
Water content matters more than people think. If a vial is carrying residual moisture, your "10mg" is not 10mg of peptide.
Inter-lab variance on this kind of assay is routinely 1–2 points. Different column, different gradient, different integration.
u-100 syringe, not u-40, or your math is off by factor of 13
Dead space in the needle hub holds a small but non-trivial volume. On low-volume draws that can be several units.
Yeah, showing the arithmetic is the fastest way for someone to spot the error.
Yeah, showing the arithmetic is the fastest way for someone to spot the error.
Two vials, two different concentrations, forgot which was which, almost made a 23 times error. Now I label everything.
Cosigning. The concentration on the vial in marker is load-bearing.
Show the arithmetic. Where did the units come from?
show your working or it is unhelpful
u-100 syringe, not u-40, or your math is off by factor of 11
Cored the stopper on my 17th draw because I kept using the same entry point. Rotate the puncture site.
10mg vial, 2mL water, concentration is 10/2 — write it on the vial afterwards
dead space is real and the syringe matters
dead space is real and the syringe matters
Disagree on that part. 99.0% and 98.9% on the same vial is normal.
swirl, do not shake, or you are courting oxidation
Spent 2 weeks confused about concentration math until someone showed me the table. 15mg, 3mL, concentration is 15/3.
The practical rule people converge on is 28 days at fridge temperature after first puncture, and that comes from the preservative, not the peptide.
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