Screening test for primary aldosteronism (aldosterone-producing conditions)
The Aldosterone Renin Ratio test measures the levels of aldosterone and renin in the blood to evaluate the balance between these two hormones. It helps in diagnosing conditions like primary aldosteronism, which causes high blood pressure and low potassium levels due to excessive aldosterone production.
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How our test process works!
Overview:
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Purpose:
The ARR test is used to screen for primary aldosteronism (PA), a condition where excess aldosterone hormone is produced by the adrenal glands, causing high blood pressure and low potassium levels. -
How it works:
It measures the levels of aldosterone and renin in the blood and calculates their ratio. A high ratio suggests abnormal aldosterone production.
Risk Assessment :
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Risks:
Minimal; blood draw risks like bruising or infection. -
Precautions:
Some medications (e.g., diuretics, ACE inhibitors, beta-blockers) can affect aldosterone and renin levels—usually stopped before testing. -
Patient position, sodium intake, and potassium levels can influence results.
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Inform your doctor about medications and medical conditions before the test.
Normal Range:
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Aldosterone: ~4-31 ng/dL (varies by lab)
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Plasma Renin Activity (PRA): ~0.65-5.0 ng/mL/hr (varies by lab)
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ARR (Aldosterone/Renin ratio):
Usually <20-30 (unit dependent, lab-specific)
Interpretation:
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High ARR:
Suggests primary aldosteronism; aldosterone is inappropriately high relative to renin. -
Low or normal ARR:
Primary aldosteronism less likely. -
Confirmatory tests are needed if ARR is elevated to diagnose and localize the source.
Sample Type:
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Blood sample (usually plasma)
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Typically collected after the patient has been sitting or standing for at least 30 minutes.
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Fasting is not usually required but follow doctor instructions.
Frequently Asked Question
Aldosterone Renin Ratio
Screening test for primary aldosteronism (aldosterone-producing conditions)
The Aldosterone Renin Ratio test measures the levels of aldosterone and renin in the blood to evaluate the balance between these two hormones. It helps in diagnosing conditions like primary aldosteronism, which causes high blood pressure and low potassium levels due to excessive aldosterone production.
Covid Safety
Assured
Free Report
Counselling