Test Code 8916 Crystal Identification
Purpose
Identifying the presence of Calcium Pyrophosphate Dihydrate (CPPD) [Pseudogout] and Monosodium Urates (MSU) [Gout] in synovial fluid.
Performing Laboratory
Copley Hospital
Methodology
Compensated Polarized Light Microscopy
Specimen Requirements
Specimen Type: Synovial Fluid
Container/Tube: Sterile Plastic Container
Specimen Volume: 2 mL
Specimen Minimum Volume: 1 mL
Collection Instructions:
1. Label specimen with patient’s full name, date of birth, date
& time of collection, collection site and person collecting.
2. Transport specimen to laboratory immediately at
room temperature.
Reference Values
Normal: None Seen
Stability
Room Temperature: 24 Hours
Day(s) Performed
Daily
Analytical Time: 1 Day
Aliases
Calcium Pyrophosphate Dihydrate (CPPD)
Monosodium Urates (MSU)
Crystal Examination
Gout
Test Classification & CPT Coding
89060 × 2