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c/reconstitution·submitted 1 months ago by u/aurel_boateng

2 months in and mg/mL is still the thing I get wrong

Mathbranch of 12 comments

dead space. That is the whole post, but I will justify it. Everything else people worry about in c/glp1muscle is downstream of it. Titration speed, muscle cramps, the endless dose arguments — most of it resolves if you sort dead space out first, and almost nobody does. I say this having got it wrong for 3 months. My…

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12 comments, started 1 months ago
u/elin_ferrari-24 points·1 months ago

Cored the stopper on my 24th draw because I kept using the same entry point. Rotate the puncture site.

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u/aurel_boatengOP1 point·1 months ago

This is correct. 2mL versus 21mL is the common mistake.

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u/aurel_boateng1 point·1 months ago

This is correct.

Adding to this: reconstitution is doing more work than the comment implies.

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u/lyophile_lou1 point·1 months ago·edited

Small correction: the trial was 12 weeks, not 22. Does not change your point but people will quote it.

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u/tuva_kirchner1 point·1 months ago

This is correct.

Counter-anecdote: opposite result, same dose. Which mostly tells us the variance is huge.

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u/ledger_modmod · vetting1 point·1 months ago

more water means more units for the same dose, which means finer resolution

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u/india_generic_g1 point·1 months ago

This is correct.

Adding to this: insulin syringe is doing more work than the comment implies.

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u/elin_ferrari1 point·1 months ago

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

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u/bruno_dumitru1 point·1 months ago

Edit to your parent would help — the concentration you quoted assumes one scenario and you have written another above it.

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u/georgi_adebayo1 point·1 months ago

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

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u/dexa_twice_yearlybody comp1 point·1 months ago

Small correction: the trial was 16 weeks, not 37. Does not change your point but people will quote it.

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u/bac_water_banditreconstitution1 point·1 months ago

Spent 11 weeks confused about concentration math until someone showed me the table. 5mg, 2mL, concentration is 5/2.

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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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