Cell Count, Synovial Fluid with Crystals
Collect green top heparin or lavender EDTA/1 mL synovial fluid. Lavender EDTA is not the preferred collection tube for crystals.
Microscopic and macroscopic examination
Room temp: Unacceptable, Refrigerated: 48 hours, Frozen: Unacceptable
By Report *
Evaluate synovial fluid for the presence of RBCs, WBCs, crystals, and for physical appearance.