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About This Test

Department: Biochemistry (referred)


EDTA (purple top)

Single dedicated sample required for renin and aldosterone


Turnaround Time:

6 - 8 weeks

Please note: sampling requirements for aldosterone and renin have changed since 17.01.18.

Both tests can be performed on a single EDTA sample (purple top).

This must be a dedicated sample.


Investigation of hyper/hypoaldosteronism

Patients should have discontinued diuretic therapy if safe to do so, be volume replete, and on a normal diet (low-sodium diet can elevated aldosterone levels).

The patient should be rested for 15 minutes prior to testing. Please request urea and electrolyte analysis at the same time.

Other Comments:

Analysed by University Hospital of South Manchester NHS Foundation Trust, Southmoor Road, Wythenshawe, Manchester, M23 9LT


Reference ranges provided by referral laboratory

For more information, please see the following: Aldosterone - Lab Tests Online

See also: Renin