Centers for Disease Control and Prevention’s Vaccine Administration: Needle Gauge and Length—Deltoid Muscle (6)
| Adults, 19 y and older | 22–25 gauge |
| 130 lb (60 kg) or less | 1 in (25 mm) |
| 130–152 lb (60–70 kg) | 1 in (25 mm) |
| Men, 152–260 lb (70–118 kg) | 1–1.5 in (25–38 mm) |
| Women, 152–200 lb (70–90 kg) | 1–1.5 in (25–38 mm) |
| Men, 260 lb (118 kg) or more | 1.5 in (38 mm) |
| Women, 200 lb (90 kg) or more | 1.5 in (38 mm) |