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c/reconstitution·submitted 2 years ago by u/sigrid_kaufmann

week 91 check-in — 26kg down, fatigue manageable, one thing confusing me

Explainerbranch of 9 comments

Right, the insulin syringe question again, but with numbers this time. I have 18 data points over 6 weeks. The pattern is consistent enough that I do not think it is chance, and boring enough that nobody is going to screenshot it, which is usually a good sign. The thing I would flag for anyone new: the effect I am…

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9 comments, started 2 years ago
u/bruno_dumitru111 points·2 years ago·edited

This is correct. 2mL versus 3mL is the common mistake.

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u/georgi_adebayo0 points·2 years ago

the concentration on the vial in marker is the most important step

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u/ilias_steiner1 point·2 years ago

the concentration on the vial in marker is the most important step

Disagree on that part. 98.4% and 98.3% on the same vial is normal.

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u/spain_receta1 point·2 years ago

show your working or it is unhelpful

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u/sofia_danquah1 point·2 years ago

show your working or it is unhelpful

Yes, exactly this, and it is the bit that took me 33 weeks to accept.

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u/emeka_delgado1 point·2 years ago

dead space is real and the syringe matters

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u/andres_sorensen53 points·2 years ago

Cored the stopper on my 22th draw because I kept using the same entry point. Rotate the puncture site.

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u/katrin_marchetti12 points·2 years ago

u-100 syringe, not u-40, or your math is off by factor of 11

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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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