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Table 1 Initial laboratory test results

From: A rare long-term undetected pheochromocytoma leading to Takotsubo syndrome in an older male patient: a case report

Parameter (unit)ResultReference value
White blood cell count (× 109/L)26.14–10
Troponin I concentration (ng/mL)10.85<  0.060
CK (U/L)118638–174
CK − MB (U/L)772–25
Brain natriuretic peptide (pg/mL)>  9000< 376
Arterial blood pH7.297.35–7.45
PaO2 (mmHg)57.380.0–110.0
PaCO2 (mmHg)38.635.0–45.0
Arterial lactate (mmol/L)4.160.5–2.2
serum potassium (mmol/L)4.393.5–5.2
Serum calcium (mmol/L)2.242.03–2.54
Serum creatinine (μmol/L)113.959–104
  1. CK Creatine kinase, PaO2 Arterial partial pressure of oxygen, PaCO2 Arterial partial pressure of carbon dioxide.