Blood Sciences Test


Aldosterone

Specimen

EDTA

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Special Instructions

Deliver to lab within 6 hr of sample collection. Correct hypokalaemia before taking the sample.

Units

ng/L

Test Usage

Effect of drugs

Ideally, Spironolactone, which inhibits aldosterone formation, must be stopped six weeks before testing. The test is fairly robust with other drugs but
the aldosterone/renin ratio may sometimes be altered by:

The basic pathology is an adrenal adenoma (2/3) or adrenal hyperplasia (1/3) causing:

Secondary hyperaldosteronism

This is found in oedematous and hypertensive states where the plasma aldosterone increase is secondary to an increased renin, e.g. diuretic therapy or renal artery stenosis.

Turnaround time

2 weeks

Availability

Referred Test

Cannot be added to existing request

Specimen Labelling Procedure