Aldosterone is a topic covered in the Davis's Lab & Diagnostic Tests.

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Common Use:
To assist in the diagnosis of primary hyperaldosteronism disorders such as Conn’s syndrome and Addison’s disease. Blood levels fluctuate with dehydration and fluid overload. This test can be used in evaluation of hypertension.

Serum collected in a gold-, red-, or red/gray-top tube. Plasma collected in a green-top (heparin) or lavender-top (EDTA) tube is also acceptable.

Normal Findings:
(Method: Radioimmunoassay)

AgeConventional UnitsSI Units (Conventional Units × 0.0277)
Cord blood40–200 ng/dL1.11–5.54 nmol/L
3 d–1 wk7–184 ng/dL0.19–5.09 nmol/L
1 mo–1 yr5–90 ng/dL0.14–2.49 nmol/L
13–23 mo7–54 ng/dL0.19–1.49 nmol/L
2–10 yr
 Supine3–35 ng/dL0.08–0.97 nmol/L
Upright (sitting for at least 2 hr)5–80 ng/dL0.14–2.22 nmol/L
11–15 yr
 Supine2–22 ng/dL0.06–0.61 nmol/L
Upright (sitting for at least 2 hr)4–48 ng/dL0.11–1.33 nmol/L
 Supine3–16 ng/dL0.08–0.44 nmol/L
 Upright7–30 ng/dL0.19–0.83 nmol/L
Older AdultLevels decline with age
These values reflect a normal-sodium diet. Values for a low-sodium diet are three to five times higher.

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