<P> A subcutaneous injection is administered as a bolus into the subcutis, the layer of skin directly below the dermis and epidermis, collectively referred to as the cutis . Subcutaneous injections are highly effective in administering vaccines and medications such as insulin, morphine, diacetylmorphine and goserelin . Subcutaneous (as opposed to intravenous) injection of recreational drugs is referred to as "skin popping ." Subcutaneous administration may be abbreviated as SC, SQ, sub-cu, sub-Q, SubQ, or subcut . Subcut is the preferred abbreviation for patient safety . </P> <P> Subcutaneous tissue has few blood vessels and so drugs injected here are for slow, sustained rates of absorption . It is slower than intramuscular injections but still faster than intradermal injections . </P>

What is the site of delivery for subcutaneous injections