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Aldosterone Unit Converter
Aldosterone is the primary mineralocorticoid hormone produced by the zona glomerulosa of the adrenal cortex. It plays a central role in regulating blood pressure and electrolyte balance by acting on the distal tubules and collecting ducts of the kidney. Specifically, it promotes sodium reabsorption (and water retention) while increasing the excretion of potassium and hydrogen ions.
Secretion is primarily regulated by the Renin-Angiotensin-Aldosterone System (RAAS) and plasma potassium levels.[Image of RAAS pathway] Clinically, measuring aldosterone is essential for diagnosing Primary Hyperaldosteronism (Conn’s syndrome), a common cause of secondary hypertension, and Adrenal Insufficiency (Addison’s disease). Because reference ranges vary significantly by posture (upright vs. supine) and salt intake, accurate unit conversion between pmol/L, ng/dL, and pg/mL is vital for correct interpretation.
SI Units
RecommendedPicomoles or Nanomoles per liter.
Conventional Units
Clinical Context
Aldosterone levels are most often evaluated in the context of the Aldosterone-Renin Ratio (ARR). A high aldosterone with suppressed renin suggests primary hyperaldosteronism, whereas high levels of both suggest secondary hyperaldosteronism (e.g., renal artery stenosis).
Reference intervals depend heavily on posture. Typical upright values range from 4 – 31 ng/dL, while supine values are lower (1 – 16 ng/dL). The conversion factor relies on the molecular weight (360.44 g/mol): 1 ng/dL ≈ 27.74 pmol/L.
Clinical References
How to Use This Calculator
Follow these steps to get accurate clinical conversions instantly.
Enter Values
Input your laboratory results into the corresponding unit field (e.g., ng/dL). You can use either dot or comma decimals.
Automatic Conversion
The calculator works in real-time. As you type in one field, all other units (like pmol/L) are instantly updated.
Verify Units
Check the SI Units section. Both pmol/L and nmol/L are provided to cover different regional standards.
Reset
Use the Clear button to reset all fields before starting a new calculation.
Frequently Asked Questions & Tips
It varies by position. Upright: 4-31 ng/dL (111-860 pmol/L). Supine: 1-16 ng/dL (28-443 pmol/L).
This converter is designed for serum/plasma (blood) levels. Urine aldosterone is typically measured over 24 hours (µg/24h).