Why does the needle have to be 30-40 degrees with the skin during subcutaneous injection?

Subcutaneous injection: It is a method of injecting a small amount of liquid medicine into the subcutaneous tissue.

Location: On the lower edge of the deltoid muscle of the upper arm, the outer upper arm, the abdomen, the back, and the outer thigh.

During subcutaneous injection, the needle penetration angle should not exceed 45 degrees to avoid penetrating the muscle layer.

By the way, let me tell you: the angle of intradermal injection is 5 degrees.

The angle of the subcutaneous injection needle is 30-40 degrees.

The angle of intramuscular injection is 90 degrees.

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