Case Report

Adolescent with Rhabdomyolysis due to Undiagnosed Hypothyroidism

Table 1

Patient’s laboratory values.

VariablesDay 1Day 2Day 3Day 4Day 10Day 14Day 40Day 70

CK (26–140 IU/L)34724237312618829060258442273792125545
LDH (91–180 IU/L)1150764
TSH (0.35–5.500 mIU/mL)77.2606510.92.38
FT4 (0.58–1.64 ng/dL)0.170.310.631.181.09
T4 (6.09–12.23 mcg/dL)28.28.2
Urine myoglobin (<0.025 mcg/mL)1374031
Serum myoglobin (<30 mcg/mL)4780
Aldolase (3.4–8.6 U/L)347291
AST (10–31 IU/L)93173357166754756541689
ALT (7–35 IU/L)820699602588514495510109
BUN (6–19 mg/dL)7643101187
Creatinine (0.5–1.04 mg/dL)0.40.30.40.40.40.40.40.5
Anti-TPO antibody (<35 IU/mL)162

CK: creatine kinase, TSH: thyroid-stimulating hormone, T4: thyroxine, FT4: free thyroxine, Anti-TPO: anti-thyroid peroxidase, LDH: lactic dehydrogenase, AST: aspartate aminotransferase, ALT: alanine aminotransferase, BUN: blood urea nitrogen.