OD, optical density. TABLE 2. Sensitivity, specificity, and positive and negative predictive beliefs for the many vs no filariae6710010067vs various other filariae67817277????IgG4vs no filariae4710010049vs other filariae47999673LIPS????IgGvs simply no filariae/vs other filariae94784898????IgG4vs no filariae/vs other filariae93814898QLIPS????IgGvs other filariae9710094100 Open in another window aPPV, positive predictive worth; NPV, detrimental predictive value....