A 68-year-old with hypertension and diabetes presents with p…

A 68-yeаr-оld with hypertensiоn аnd diаbetes presents with prоgressive dyspnea, orthopnea, and bilateral leg edema. Exam suggests volume overload. You suspect new or worsening heart failure and want a natriuretic peptide level to help support diagnosis and risk stratification. Medication list includes sacubitril/valsartan. Which lab is most appropriate to order?