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Health TopicsTests and ProceduresDiagnostic Procedures
question

What is a PAC:PRA ratio diagnostic test?

American Association of Endocrine Surgeons
American Association of Endocrine Surgeons
answer
The first test used in patients suspected to have primary hyperaldosteronism measures the plasma aldosterone concentration (PAC) to plasma renin activity (PRA) ratio. The levels of aldosterone and renin are measured in the blood. A high ratio of PAC to PRA suggests primary hyperaldosteronism; however, additional testing may be needed to confirm the diagnosis. 

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