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Aldosterone
minimum sample volume required ~ 4ml
Test Code: ALD
Tube type: EDTA
Special instructions
Sample MUST be received by the lab within 4 hours of collection.
Serum potassium must be >3mmol/L.
Sent away
to Charing Cross Hospital
Contact Laboratory before requesting
Reference range
90 - 700
Units
pmol/L
Linked to
Renin
Turnaround Time
28
days
Department: Biochemistry
Clinical Application
Measurement of renin-aldosterone ratio in plasma is useful in investigation of suspected Conn's syndrome NOTE: See also Renin. Anti-hypertensive drugs may need to be withdrawn prior to test - see protocol.
Interpretation of Aldosterone/Renin ratio (ARR):
Conn's unlikely:<680
Possible Conn's: >850
Conn's very likely: >1700
