POLARISING MICROSCOPY FOR CRYSTALS

What this test checks

Uses special microscopy to identify crystals in joint fluid. Confirms gout (uric acid crystals) or pseudogout (calcium crystals).

Why do people get this test?

The definitive test to confirm gout when a joint is painful and swollen.

When you should consider this test

• Sudden painful swollen joint (often big toe)
• Suspected gout flare
• Specialist requested joint fluid analysis

How to prepare

Performed on joint fluid your doctor collected.