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Single comment threadYou are looking at one branch of [Discussion] can we stop arguing about units until somebody posts a number — 55 comments in the full submission. View in context.
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c/reconstitution·submitted 2 years ago by u/gradient_goblin

[Discussion] can we stop arguing about units until somebody posts a number

Discussionbranch of 8 comments

Trying to settle this properly because the thread from last year went in circles. The claim: mg/mL matters. The counter-claim: it is measurement error. Both sides have been asserting it confidently for about 7 months without either producing anything. What would actually settle it is 7 people measuring the same thing…

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This branch

8 comments, started 2 years ago
u/sock_puppet_spotter80 points·2 years ago

Yeah, showing the arithmetic is the fastest way for someone to spot the error.

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u/anjali_tamm41 points·2 years ago

Cored the stopper on my 7th draw because I kept using the same entry point. Rotate the puncture site.

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u/gradient_goblinOP31 points·2 years ago

Reconstituted at 3mL when I meant 9mL. Caught it because the units looked wrong. Write the concentration.

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u/dilara_szabo21 points·2 years ago

never post a calculation as advice without stating the concentration

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u/quiet_reader_9933 points·2 years ago

The confident tone is doing a lot of work that the evidence is not.

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u/saskia_rahimi11 points·2 years ago

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

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u/lyophile_lou20 points·2 years ago

dead space is real and the syringe matters

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u/liv_nkemelu31 points·2 years ago

This is correct. 1mL versus 5mL is the common mistake.

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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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