At what angle should an intradermal injection be administered?

An intradermal injection should be administered at a 5 to 15 degrees angle. This specific angle is crucial because it allows the needle to enter the dermis layer of the skin, which is where the medication needs to be deposited for optimal absorption and effectiveness. At this shallow angle, the needle tip can be placed just beneath the epidermis, creating a small bleb or wheal that indicates correct placement of the injection. This method is commonly used for allergy tests and tuberculosis screening, where precise placement in the dermal layer is essential for accurate results.