Intervention / Treatment
Synovial Alpha-defensin assay
Synovial Neutrophil elastase assay
Synovial lactate assay
Synovial C-reactive Protein (CRP)
Synovial Staphylococcus spp antigen panel
Synovial Candida spp antigen panel
Synovial Enterococcus faecalis assay
Synovial bacterial culture by BacT/Alert
Synovial Cell count + differential (CBC)
Synovial Gram Stain
Synovial Leukocyte Esterase Test Strips
Synovial PCR for Kingella kingae
Serum Cell count + differential (CBC)
Serum erythrocyte sedimentation rate (ESR)
Serum C-reactive Protein (CRP)
Serum D-dimer
Serum Procalcitonin
Blood Cultures
Optional blood testing per standard of care (ASO, anti-strep, ANA, anti-DS-DNA, HLA-B27, RF, Lyme and other inflammatory/ rheumatologic markers )