MB and acute kidney injury: Other risk factors for AKI in pediatric rhabdomyolysis include higher peak CK levels [14,38,69,77,82], higher serum or urine myoglobin levels [19,69,77,81], metabolic acidosis or lower bicarbonate levels [38,77,78], abnormal urinalysis findings [14,38,47,69,83], and lower serum calcium levels [69,78].