Study: NCT03704766

Intervention type: DIAGNOSTIC_TEST
Group type: EXPERIMENTAL
Intervention: Synovial Alpha-defensin assay
Description: One of the synovial fluid (joint fluid) tests that will be performed by the outside lab, CD Diagnostics.

Intervention type: DIAGNOSTIC_TEST
Group type: ACTIVE_COMPARATOR
Intervention: Synovial Alpha-defensin assay
Description: One of the synovial fluid (joint fluid) tests that will be performed by the outside lab, CD Diagnostics.

Intervention type: DIAGNOSTIC_TEST
Group type: EXPERIMENTAL
Intervention: Synovial Neutrophil elastase assay
Description: One of the synovial fluid (joint fluid) tests that will be performed by the outside lab, CD Diagnostics.

Intervention type: DIAGNOSTIC_TEST
Group type: ACTIVE_COMPARATOR
Intervention: Synovial Neutrophil elastase assay
Description: One of the synovial fluid (joint fluid) tests that will be performed by the outside lab, CD Diagnostics.

Intervention type: DIAGNOSTIC_TEST
Group type: EXPERIMENTAL
Intervention: Synovial lactate assay
Description: Synovial Fluid (joint fluid) will be sent out to CD Diagnostics for this test.

Intervention type: DIAGNOSTIC_TEST
Group type: ACTIVE_COMPARATOR
Intervention: Synovial lactate assay
Description: Synovial Fluid (joint fluid) will be sent out to CD Diagnostics for this test.

Intervention type: DIAGNOSTIC_TEST
Group type: EXPERIMENTAL
Intervention: Synovial C-reactive Protein (CRP)
Description: One of the synovial fluid (joint fluid) tests that will be performed by the outside lab, CD Diagnostics.

Intervention type: DIAGNOSTIC_TEST
Group type: ACTIVE_COMPARATOR
Intervention: Synovial C-reactive Protein (CRP)
Description: One of the synovial fluid (joint fluid) tests that will be performed by the outside lab, CD Diagnostics.

Intervention type: DIAGNOSTIC_TEST
Group type: EXPERIMENTAL
Intervention: Synovial Staphylococcus spp antigen panel
Description: One of the synovial fluid (joint fluid) tests that will be performed by the outside lab, CD Diagnostics.

Intervention type: DIAGNOSTIC_TEST
Group type: ACTIVE_COMPARATOR
Intervention: Synovial Staphylococcus spp antigen panel
Description: One of the synovial fluid (joint fluid) tests that will be performed by the outside lab, CD Diagnostics.

Intervention type: DIAGNOSTIC_TEST
Group type: EXPERIMENTAL
Intervention: Synovial Candida spp antigen panel
Description: One of the synovial fluid (joint fluid) tests that will be performed by the outside lab, CD Diagnostics.

Intervention type: DIAGNOSTIC_TEST
Group type: ACTIVE_COMPARATOR
Intervention: Synovial Candida spp antigen panel
Description: One of the synovial fluid (joint fluid) tests that will be performed by the outside lab, CD Diagnostics.

Intervention type: DIAGNOSTIC_TEST
Group type: EXPERIMENTAL
Intervention: Synovial Enterococcus faecalis assay
Description: One of the synovial fluid (joint fluid) tests that will be performed by the outside lab, CD Diagnostics.

Intervention type: DIAGNOSTIC_TEST
Group type: ACTIVE_COMPARATOR
Intervention: Synovial Enterococcus faecalis assay
Description: One of the synovial fluid (joint fluid) tests that will be performed by the outside lab, CD Diagnostics.

Intervention type: DIAGNOSTIC_TEST
Group type: EXPERIMENTAL
Intervention: Synovial bacterial culture by BacT/Alert
Description: The synovial fluid (joint fluid) sent to CD Diagnostics for testing will also be cultured to see if any organisms grow.

Intervention type: DIAGNOSTIC_TEST
Group type: ACTIVE_COMPARATOR
Intervention: Synovial bacterial culture by BacT/Alert
Description: The synovial fluid (joint fluid) sent to CD Diagnostics for testing will also be cultured to see if any organisms grow.

Intervention type: DIAGNOSTIC_TEST
Group type: EXPERIMENTAL
Intervention: Synovial Cell count + differential (CBC)
Description: One of the synovial fluid (joint fluid) tests that will be performed by the outside lab, CD Diagnostics.

Intervention type: DIAGNOSTIC_TEST
Group type: ACTIVE_COMPARATOR
Intervention: Synovial Cell count + differential (CBC)
Description: One of the synovial fluid (joint fluid) tests that will be performed by the outside lab, CD Diagnostics.

Intervention type: DIAGNOSTIC_TEST
Group type: EXPERIMENTAL
Intervention: Synovial Gram Stain
Description: This will be performed by CD Diagnostics if any organisms are present in the synovial fluid.

Intervention type: DIAGNOSTIC_TEST
Group type: ACTIVE_COMPARATOR
Intervention: Synovial Gram Stain
Description: This will be performed by CD Diagnostics if any organisms are present in the synovial fluid.