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Recording concentration on the vial label (not a dosing question)

To be crystal clear up front: I am not asking what to take or anything human-use related. Purely a documentation question.

When you reconstitute a stock for bench work, what exactly do you write on the vial label so the concentration is unambiguous later? I've seen mg, mg/mL, and total-mg-in-vial all used and it's a recipe for confusion. Looking for the convention people actually trust.

Good, in-scope question and thank you for framing it clearly. For the label: write the concentration as mg/mL (e.g. "5 mg/mL") plus the total mg and the reconstitution date — that's unambiguous for bench tracking. We'll keep this one to documenting concentration; anything about amounts to administer is out of scope for the forum, but that's not what you asked. Leaving it up as a clean example.

Seconding mg/mL plus total mg. I also add the diluent volume I used, so the whole calculation is reconstructable from the label alone months later.

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