A 38-year-old patient has episodes of paroxysmal hypertension that reaches 240/120 mm Hg and is accompanied by nausea, vomiting, tachycardia, and excessive sweating. Hyperglycemia is observed in the blood during such episodes. After the episode, profuse urination occurs. Renal sonography has shown a new formation adjacent to the upper pole of the right kidney that might belong to the adrenal gland. What laboratory test will help clarify the diagnosis?

Question

Answer options

Urinary excretion of catecholamines and vanillylmandelic acid
Blood renin levels
Blood levels of insulin and C-peptide
Glomerular filtration rate, measured using the endogenous creatinine clearance rate
Blood levels of thyroxine and thyroidstimulating hormone

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