What is the aldosterone-renin ratio used for?

It is used to screen for primary aldosteronism, a cause of high blood pressure.

Does a positive screen mean I have primary aldosteronism?

No. A positive screen is usually followed by confirmatory testing directed by a clinician.

Posture, time of day, salt intake, certain medicines, and licorice can affect aldosterone and renin. Follow clinician instructions.

Quest specifies frozen EDTA plasma, so the draw site must process the sample correctly.

Hormone and endocrine health

A test that compares aldosterone to plasma renin activity, used to screen for primary aldosteronism.