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

what changed for me between week 85 and week 39

PSAbranch of 6 comments

Long-ish post, sorry. tl;dr at the bottom. I have been tracking units against ApoB for 3 weeks because I could not find anyone who had. The correlation is weaker than I expected, which is itself mildly interesting given how confidently people link the two in here. Caveats up front: one person, one lab, one assay, no…

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6 comments, started 2 years ago
u/quiet_reader_99741 points·2 years ago

15mg vial, 2mL water, concentration is 15/2 — write it on the vial afterwards

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u/lurker_for_years265 points·2 years ago

Slight fix: the number was 98.1, not 98.0. Decimal point, but a fairly consequential one.

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u/runa_grimaldi568 points·2 years ago

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

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[deleted]373 points·2 years ago

[deleted]

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u/vial_math_verasyringe math200 points·2 years ago

Did you write the concentration on the vial?

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u/yusuf_nakamura-11 points·2 years ago

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

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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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