CRP and Hypercalcemia: Serum CRP level was not significantly different among the three groups, i.e., control vs. mixed etiology vs. clear hypercalcemia group: 52.0 ± 79.43 vs. 34.63 ± 49.52 vs. 63.97 ± 79.32 mmol/L; control–mixed (97.5% CI: −0.3215–0.5837), p = 0.7753; control-clear (97.5% CI: −1.2659–0.6826), p = 0.7621; and clear-mixed (97.5% CI: −0.6455–1.4910), p = 0.6222 (Figure 6).