Vaccine Administration Guidelines for Adults
Parameter | Needle Size | Comments |
|---|---|---|
By route | ||
Subcutaneous | 23–25 gauge 5/8" long | The needle should be inserted into fatty tissue over the triceps. |
Intramuscular | 23–25 gauge for injection into the deltoid | Needle length is determined by sex and weight (see below). |
By sex and weight for intramuscular injection | ||
Male or female, < 60 kg | 5/8–1" long | A 5/8" needle may be used for intramuscular injection into the deltoid muscle only if subcutaneous tissue is not bunched and injection is made at a 90° angle. |
Females, 60–90 kg | 1–1.5" long | — |
Males, 60–118 kg | 1–1.5" long | — |
Females, > 90 kg | 1.5" long | — |
Males, > 118 kg | 1.5" long | — |
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