Test Overview
Joint fluid analysis
is a test to look at joint fluid under a microscope for problems such as
infection,
,
,
, or bleeding. The test can help find the
cause of
pain or swelling.
Normally, only a
small amount of joint fluid is found in a joint. Joint fluid acts as a
lubricant for the joint and cushions joint structures. If you have a joint
problem, you may have more fluid in your joint and your joint may become
swollen, stiff, and painful.
A sample of joint fluid can be taken
from any joint in your body. The joint fluid is then analyzed in a lab to look
for inflammation, infection, gout, pseudogout, or bleeding.