General
Synonym/Acronym:
N/A.
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.
Specimen:
Serum (1 mL) collected in a red- or tiger-top tube. Plasma (1 mL) collected in a green-top (heparin) or lavender-top (EDTA) tube is also acceptable.
Normal Findings:
(Method: Radioimmunoassay)
| Age | Conventional Units | SI Units (Conventional Units × 0.0277) |
|---|
| Cord blood | 40–200 ng/dL | 1.11–5.54 nmol/L |
| 3 days–1 wk | 7–184 ng/dL | 0.19–5.10 nmol/L |
| 1 mo–1 yr | 5–90 ng/dL | 0.14–2.49 nmol/L |
| 13–23 mo | 7–54 ng/dL | 0.19–1.50 nmol/L |
| 2–10 yr | | |
| Supine | 3–35 ng/dL | 0.08–0.97 nmol/L |
| Upright | 5–80 ng/dL | 0.14–2.22 nmol/L |
| 11–15 yr | | |
| Supine | 2–22 ng/dL | 0.06–0.61 nmol/L |
| Upright | 4–48 ng/dL | 0.11–1.33 nmol/L |
| Adult | | |
| Supine | 3–16 ng/dL | 0.08–0.44 nmol/L |
| Upright | 7–30 ng/dL | 0.19–0.83 nmol/L |
| Older Adult | Levels decline with age | |
| These values reflect a normal-sodium diet. Values for a low-sodium diet are three to five times higher. |
Aldosterone has been found in Davis's Lab & Diagnostic Tests
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