The sample is collected using an injection and the fluid is further sent for the analysis.

The collection should be performed in front of a trained specialist

Synovial fluid, also known as joint fluid, is a thick liquid located between your joints. The fluid cushions the ends of bones and reduces friction when you move your joints. A synovial fluid analysis is a group of tests that checks for disorders that affect the joints. The tests usually include the following:

• An exam of physical qualities of the fluid, such as its color and thickness
• Chemical tests to check for changes in the fluid's chemicals
• Microscopic analysis to look for crystals, bacteria, and other substances