Glossary
Draw
Also called Drawing a dose, Draw up, Pulling a dose
Pulling liquid from a vial into a syringe. To draw a dose is to measure the number of units you need on the syringe.
In more detail
The standard method from MedlinePlus: wipe the stopper, pull the plunger back to your dose to fill the syringe with air, push that air into the vial (this keeps a vacuum from forming), turn the vial upside down, then pull the plunger past your dose and push back to the exact line to clear bubbles. Peptide guides teach the same sequence.
Read the dose at the top edge of the plunger's rubber stopper, at eye level.
Why it matters
Bubbles take up space that should be liquid, so a bubbly draw is a short dose. See How to read an insulin syringe.
Related terms
- Vial headspaceThe air space above the powder or liquid in a sealed vial. Its pressure, often a partial vacuum on sealed powder vials, affects how water goes in and how doses come out.
- U-100 insulin syringeThe small insulin syringe most people use for peptides. Its scale is marked in units, where 100 units equals 1 mL, so 1 unit is 0.01 mL of liquid.
- Sterile techniqueThe set of habits that keep germs out of a vial, syringe and injection site: clean hands, swabbed stoppers and skin, new needles, and never touching anything that should stay sterile.
- Dead spaceThe liquid left in the needle and hub after the plunger is fully pushed. It is not delivered, and it varies by syringe design.
Sources
Each source is labeled by where the information comes from. How we label sources
- Reference workDrawing medicine out of a vial(opens in a new tab)
MedlinePlus (U.S. National Library of Medicine) · checked
- Competitor guideInsulin syringes for peptides (U-100 units)(opens in a new tab)
peptiq.io · checked
- Competitor guideSyringe measurement guide(opens in a new tab)
peptidedosages.com · checked
Updated