Skin lesion aspiration Skin lesion aspiration is the withdrawal
of fluid from a skin lesion How the test is performed A needle
is put into skin sore or skin abscess , which may contain fluid
or pus. The fluid may be examined under a microscope. It may
also be put in a lab dish (called a culture medium) and watched
for growth of bacteria or fungi. How to prepare for the test You
do not need to prepare for this test. How the test will feel The
health care provider may inject a numbing medicine (anesthetic)
into the skin before inserting the needle if the sore is deep.
You may feel a pricking sensation as the needle enters the skin.
In many cases, the removing fluid will lessen pressure within
the skin sore and ease pain. Why the test is performed This test
is used find the cause of a fluid-filled skin lesion. It can be
used to diagnose skin infections. What abnormal results mean
Abnormal results may be a sign of a infection caused by
bacteria, fungi, or viruses. What the risks are There is a small
risk of bleed