In addition to proprietary tests, the Synovasure Comprehensive PJI
Test Panel also includes standard of care (SoC) tests:
Synovial Fluid Culture
Aerobic and anaerobic culture to determine identity and
susceptibility of organisms. Cultures are held for seven (7) days on
all samples and 14 days for shoulder specimens.
White Blood Cell (WBC) Count w/ Differential
Automated, high-performance cell count that provides overall number
of white blood cells and percentage breakdown of white blood cell type
in synovial fluid.
A recent study shows that automated WBC count can be affected by the
presence of a total joint arthroplasty, leading to higher rates of
false-positive results.12 All WBC counts >3,000
cells/ul are confirmed by a manual count.
Polarized microscopy to detect monosodium urate (MSU) and calcium
pyrophosphate dihydrate (CPPD) crystals to aid in identifying the
presence of gout and CPPD disease (pseudogout).