Good accuracy of the alpha-defensin lateral flow test for hip periprosthetic joint infection: A pilot study in a retrospective cohort of 52 patients

Table 4 New 2018 International Consensus Meeting scoring criteria for periprosthetic joint infection definition[5]: Preoperative diagnosis

Preoperative score: Minor criteria	Score	Decision
Serum: Elevated CRP or D-Dimer	2	≥ 6: Infected
Serum: Elevated ESR	1
Synovial: Elevated synovial WBC count or LE	3	2-5: Possibly infected1
Synovial: Positive alpha-defensin	3
Synovial: Elevated synovial PMN (%)	2	0-1: Not infected
Synovial: Elevated synovial CRP	1

¹See table 5. CRP: C-reactive protein; ESR: Erythrocyte sedimentation rate; WBC: White blood cell; PMN: Polymorphonuclear neutrophil.