1. PCT was a better predictor than CRP for major AL. 2. The best cutoff was PCT at POD 5 (0.31 ng/mL) with 100% sensitivity, 72% specificity, 100% NPV, and 17% PPV. 3. For CRP at POD 5, a cutoff of 135 mg/L had 73% sensitivity, 83% specificity, 98% NPV, 20% PPV. 4. Both PCT and CRP showed AUC >0.800 after POD 3 for major AL. Here, CRP is linked to axial length measurement.