Intradermal injections are used to administer which of the following?

A) Insulin
B) Allergy or TB test
C) Heparin
D) Penicillin
E) Vitamin B₁₂

Intradermal

Pertaining to the administration of substances directly into the dermis layer of the skin.

Allergy

An immune system response to a foreign substance that's not typically harmful to the body, like pollen, food, or pet dander.

TB Test

A diagnostic test for tuberculosis (TB) that typically involves injecting a substance called tuberculin into the skin and observing the reaction to determine exposure to TB bacteria.