How long should an intramuscular needle be?

• the desired absorption rate for the medication.
In general for IM (intramuscular) injections you would use a 21 to 23 gauge needle 1 to 1.5 inches long for an adult. In a child you use a 1 inch long, 25 to 27 gauge needle. In obese patients, 1.5 to 2 inch needles may be necessary.**

In this regard, what size needle is used for IM injections?

Intramuscular injections. The deltoid muscle is most often used as the site for IM injections in adults: Needle length is usually 1–1½", 22–25 gauge, but a longer or shorter needle may be needed depending on the patient's weight.

What is the maximum volume for intramuscular injection?

Overall, 5 mL has been cited for adults as the maximum volume for a single IM injection, with lower maximums proposed for adult patients with less-developed or small muscle mass.

What size needle is used for b12 injections?

Gather your B-12 medication vial, a 1 ml syringe and a 22- to 25-gauge needle that's 1 to 1 1/2 inches long. The larger-gauge needle is finer than the 22 and will provide the most comfort during the injection.

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