Apellis is exclusively distributing injection kits with the 18-gauge filter needle. There are eight confirmed reports of retinal vasculitis and two unconfirmed reports.

Sixteen gauge needles performed better than 18 g needles, especially in terms of specimen quality criteria, although cancer detection rate was not significantly improved.

Results showed that patients injected with the 34-gauge vs. 33-gauge needle reported significantly less pain during their initial injection (0.49 vs. 0.79; P = .007).

The sight and sound could easily make you cringe. A paramedic grabs your leg at the calf, holding up your thin-skinned shin, and pulls out a 15-gauge syringe, the same size as the ones used for IVs.