u/mateusz_achebe

ApoB over LDL-C, that is the hierarchy

Inter-lab variance on this kind of assay is routinely 1–2 points. Different column, different gradient, different integration.

Dead space in the needle hub holds a small but non-trivial volume. On low-volume draws that can be several units.

contraception interaction claims need citation

What was the batch number and which service?

no cycle-tracking data with identifying details

Disagree but this is the good kind of wrong — it is specific enough to be checked.

stopper coring on the 5th draw because you keep using the same entry point.

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

Not to be pedantic but contraception and perimenopause are being used interchangeably and they are not interchangeable in real life.

hair-loss on contraception is real

The muscle cramps was genuinely awful for three weeks and then simply stopped. I know that is not useful information, but it is what happened.

Stalled for 21 weeks, changed nothing, and it started moving again on week 45.

Strongly agree. Cycle changes are documented.

dead space is real and the syringe matters

This is correct. 2mL versus 13mL is the common mistake.

redact identifying details from lab PDFs before posting

This is correct. 1mL versus 21mL is the common mistake.

baseline is the most important eGFR measurement, you cannot collect it later