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c/reconstitution·posted 5 months ago by u/spain_receta

what changed for me between week 45 and week 94

Question

Quick one. Canada here.

reconstitution 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 5 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.

238 up / 321 down43% upvoted12 commentsid 5fpsez14 Feb 2026

12 comments

12 in this archive, depth 4

best — the order this archive was captured in

u/dexa_twice_yearlybody comp17 points·5 months ago·edited

u-100 syringe, not u-40, or your math is off by factor of 17

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u/spain_recetaOP20 points·5 months ago

Cored the stopper on my 11th draw because I kept using the same entry point. Rotate the puncture site.

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u/kavya_radich9 points·5 months ago

Dead space ate 6 units on a low-volume draw. Tiny impact at 12.5mg, massive impact at 10mg.

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u/spain_recetaOP4 points·5 months ago

Dead space ate 6 units on a low-volume draw.

Yes, exactly this, and it is the bit that took me 42 weeks to accept.

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u/arto_falk8 points·5 months ago
wrong community but useful, so, shrug
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u/runa_cabrera7 points·5 months ago

Cosigning. The concentration on the vial in marker is load-bearing.

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u/tl_dr_tina5 points·5 months ago

You have restated the marketing copy. What is the actual substance here.

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u/arne_restrepo-17 points·5 months ago

dosing errors come from people reconstituting two vials differently and forgetting which is which

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u/nabila_espinoza2 points·5 months ago·edited

Did you write the concentration on the vial?

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u/sigrid_kaufmann4 points·5 months ago

bacteriostatic and sterile water are not interchangeable, do not use them that way

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[removed]6 points·5 months ago

[removed by moderator]

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u/kenji_kimani4 points·5 months ago

Respectfully this is a sample of one presented as a finding.

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About c/reconstitution

The arithmetic and the technique. Bacteriostatic versus sterile water, reconstitution volume as a concentration choice, converting mg/mL into insulin-syringe units, dead space, swirl-not-shake, stopper coring, and how long a reconstituted vial is actually good for. Math errors get corrected fast and politely.

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