Ann Clin Microbiol 2023;26:103-115. Clinical usefulness of procalcitonin/albumin and blood urea nitrogen/albumin ratios for the early detection of bacteremia

Table 3. Area under the receiver operating characteristic (ROC) curve for predicting Gram-negative bacteremia or Gram-positive bacteremia
VariableGram-negative bacteremia (n =77)
AUC 95% CIP-value*
Procalcitonin0.8370.81-0.860.005
Procalcitonin/albumin ratio0.8460.82-0.87
hsCRP0.6610.63-0.69< 0.001
hsCRP/albumin ratio0.7020.67-0.73
Lactic acid0.6100.58-0.64< 0.001
Lactic acid/albumin ratio0.6360.61-0.67
BUN0.6370.61-0.67< 0.001
BUN/albumin ratio0.6680.64-0.70
Albumin0.6640.63-0.69
VariableGram-positive bacteremia (n = 55)
AUC95% CIP-value*
Procalcitonin0.6070.57-0.640.046
Procalcitonin/albumin ratio0.6160.58-0.65
hsCRP0.5050.47-0.540.003
hsCRP/albumin ratio0.5350.50-0.57
Lactic acid0.6430.61-0.670.080
Lactic acid/albumin ratio0.6590.63-0.69
BUN0.6790.65-0.710.007
BUN/albumin ratio0.7090.68-0.74
Albumin0.6390.61-0.67

*Comparison of ROC curves was performed using the Delong method. Abbreviations: AUC, area under the curve; CI, confidence interval; hsCRP, high sensitivity C-reactive protein; BUN, blood urea nitrogen.