Odolean IgG4 altua izateak (135-144 mg/dL) IgG4arekin erlazionatutako gaixotasuna egon zitekeela adierazi zuen % 87,2ko sentsibilitatearekin (% 95 KT, % 85,2-89,0) eta % 82,6ko espezifikotasunarekin (% 95 KT, % 81,6-83,6). Horren aurresate-balio positiboa, aurresate-balio negatiboa eta diagnostikorako odds ratioa (DOR) 6,48 (% 95 KT, 3,98-10,57), 0,14 (% 95 KT, 0,09-0,21) eta 45,15 (% 95 KT, 23,41-87,06) ziren, hurrenez hurren. Era berean kurba azpiko area 0,94 (0,92-0,96) zen. Gako-hitzak: IgG4, IgG4 gaixotasuna, sentsibilitatea, espezifikotasuna, efektibitatea. The pooled estimate, for a cut-off value ranged from 135 to 144 mg/dL, produced a sensitivity of 87.2% (95% CI, 85.2-89.0%) and a specificity of 82.6% (95% CI, 81.6-83.6%). The positive likelihood ratio (PLR), negative likelihood ratio (NLR), and diagnostic odds ratio (DOR) were 6.48 (95% CI, 3.98-10.57), 0.14 (95% CI, 0.09-0.21), and 45.15 (95% CI, 23.41-87.06), respectively. The area under the curve (AUC) of the summary receiver operating characteristic curve (SROC) was 0.94 (0.92-0.96). Keywords: IgG4, IgG4-Related disease, sensitivity, specificity, effectiveness