andrew_nyc said:Order of operations matters more than any single choice here: establish a baseline, change one thing, wait long enough for it to express itself, then…
Second this.
Reporting back.
Resolved. I wrote mg, ml and mg/ml on the vial in marker and did the division in that order, and the two of us now get the same number every time.
One concrete data point for the thread. One practical note: write down what you did and when, before you need it. Reconstructing a timeline from memory three months later is how people end up unable to answer the one question that would have resolved it.
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Shop Reference StandardsFollowing on from andrew_nyc — and this may be the naive question:
Was that from a primary source or from a summary of one?
Old thread, but it comes up first when you search for this, so it is worth updating. For anyone reading later: the numbers in this thread are worth checking against a primary source before you act on them, including mine. Half the figures circulating in this community trace back to a secondary summary that dropped a qualifier.