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Table 3 CDCP recommendations for for needle length for intramuscular injection

From: The pharmacokinetics of epinephrine/adrenaline autoinjectors

Gender

Needle length

Male

Female

Inch

mm

lb

kg

lb

kg

< 130

< ≈ 60

< 130

< ≈ 60

5/8–1

15.8

130–152

≈ 60–70

130–152

≈ 60–70

1

25.4

153–260

≈ 70–118

153–200

≈ 70– ≈ 90

1–1½

25.4–38.1

> 260

> ≈ 120

> 200

> ≈ 90

38.1

  1. In older children and adolescents, 1 to 1¼ inch (25.4–33.5 mm) needle for injection in the vastus lateralis