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

what changed for me between week 85 and week 39

PSA Cold Box ×4 Slow Clap ×3 Clean Column ×3

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 control, and I changed my training in the middle of it, which was stupid.

tl;dr: probably real, definitely smaller than the threads imply, and not worth reorganising your week around.

10,573 up / 1,801 down85% upvoted52 commentsid erlmkg16 May 2024

52 comments

15 in this archive, depth 4

best — the order this archive was captured in

u/viktor_erdogan1.3k points·2 years ago

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

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u/india_generic_g834 points·2 years ago

Did you write the concentration on the vial?

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u/oskar_ibarra404 points·2 years ago

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

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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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u/sock_puppet_spotter521 points·2 years ago

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

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u/bac_water_banditMOD344 points·2 years ago

Tracking number removed. It identifies both ends of a shipment.

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u/emil_zamora507 points·2 years ago

20mg vial, 2mL water, concentration is 20/2 — write it on the vial afterwards

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u/adaeze_cabrera254 points·2 years ago

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

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u/lurker_for_years189 points·2 years ago

Respectfully this is a sample of one presented as a finding.

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u/rina_bergstrom63 points·2 years ago·edited

dead space is real and the syringe matters

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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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