What is the maximum volume for an intradermal injection?

The maximum volume for an intradermal injection is indeed 0.1 mL. Intradermal injections are typically administered into the dermis, which is a thin layer of tissue just below the outer layer of skin (epidermis). Due to the limited capacity of the dermal layer, injecting more than 0.1 mL can lead to complications such as overflow or significant tissue irritation.

This specific volume is important for achieving the desired therapeutic effect, particularly in allergy testing or tuberculosis skin tests, where accurate dosing is critical. Hence, the standard practice for intradermal administration is to keep the volume to a maximum of 0.1 mL to ensure safety and efficacy.