Most syringes come in measures of 30-units or 0.3 milliliters (ml), 50 units (0.5 ml), and 100 units (1 ml). These measures refer to the barrel size and how much insulin the syringe can hold.

Needle sharing is the second biggest risk for HIV, after anal sex. About 1 in 10 new HIV infections happen in people who inject drugs. How Needle Sharing Exposes You to HIV ...

Becton Dickinson has tallied “pandemic orders” for more than 1 billion injection devices from countries around the world with vaccinations against Covid-19 well underway.