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c/reconstitution·posted 16 days ago by u/aurel_boateng

[PSA] let the alcohol swab dry before you puncture, that is the step everyone skips

PSA Sourced ×3

Quick one. Canada here.

units 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.

1,167 up / 352 down77% upvoted27 commentsid 17ggsy13 Jul 2026

27 comments

9 in this archive, depth 5

best — the order this archive was captured in

u/sleep_apnea_sam101 points·15 days ago

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

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u/units_not_mgMOD59 points·15 days ago

Flair changed to match the content. Read the sidebar before posting next time and we are square.

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u/dilara_szabo83 points·14 days ago

stopper coring on the 11th draw because you keep using the same entry point. rotate.

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u/signe_grimaldi44 points·14 days ago

u-100 syringe, not u-40, or your math is off by factor of 18

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u/marta_weiss14 points·14 days ago

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

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u/rina_bergstrom67 points·16 days ago

Inter-lab variance on this kind of assay is routinely 1–2 points. Different column, different gradient, different integration.

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u/gradient_goblin28 points·15 days ago

That is net peptide content, not purity. Different number, different meaning.

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u/saskia_mwangi38 points·16 days ago

The single most useful thing I did was write the concentration on the vial. Stopped all the confusion after that.

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u/julia_erdogan-28 points·16 days ago

stopper coring on the 6th draw because you keep using the same entry point. rotate.

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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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