Reconstitution

Work out the draw before you open the vial

Concentration, draw volume, insulin-syringe units and doses per vial. The arithmetic is printed under every answer so you can check it rather than trust it.

Vial strength

What is printed on the vial, not the dose.

Bacteriostatic water added

More water does not change the drug. It changes how finely you can measure it.

Dose you want to give

Per administration, not per week.

Syringe

U-100 means 100 units to 1 mL, whatever is in the barrel.

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Units to draw

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mL to draw

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Concentration

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Doses per vial

Where it sits in the barrel

0——

What this does not decide. It converts a dose you have already chosen into a volume. It does not choose the dose, the schedule, or whether a product is appropriate for a given patient. Reconstituted storage and in-use shelf life vary by product and are not assumed here.