Test Category: Biochemistry
Investigation Name:Aldosterone
Pathology Laboratory:Clinical Chemistry/ Biochemistry
Requestable Seperately?Yes
Units:pmol/L
Minimum Sample Volume:1 mL
Expected Turnaround Time:7 working days from receipt
Test Code:ALDO / ALRE
Sample Type:
EDTA Tube (Purple top)Complex Reference Range:100 - 1200 pmol/L upright
100 - 860 pmol/L supine
Aldosterone:Renin Ratio <31 pmol/mIU makes primary hyperaldosteronism (Conn's syndrome) unlikely .
Aldosterone:Renin Ratio >=31 pmol/mIU makes primary hyperaldosteronism (Conn's syndrome) more likely
Collection Conditions / Other Information:LAB INSTRUCTIONS: Use EALRE if renin also requested. Separate and freeze plasma.
Referred to Another Laboratory?No
Posting Address / Requirements:Transport sample frozen
Sandwell Health Campus
Specialist Chemistry
Pathology Department
Lyndon, B71 4HJ
EQA Scheme:UKNEQAS Steroids scheme
Further information:Affected by most anti-hypertensives with the exception of alpha blockers, verapramil and hydralazine.
Hypokalaemia suppresses aldosterone secretion.
Lead Contact Details:For clinical queries email duty biochemist : rwh-tr.bcpsdutybiochemist3@nhs.net
Email Address For Chasing Results:rwh-tr.bcpsspecialistchemistryenquiries@nhs.net
Methodology:IDS-iSYS
UKAS Reference Number:Verified for use - ETS, currently awaiting UKAS accreditation (updated November 2025)
Site Sample Tested:Sandwell Health Campus
Cost:Please email: bcpspathology.info@nhs.net for further details
Contact Number:0121 507 5162
