Aldosterone (Blood)

Testing Laboratory

Auckland Te Toka Tumai | Auckland Hospital

Department

Refer to Testing Lab link

Delphic Registration Code (Alpha Code)

ALDO

Test Code (Numeric Code)

7108

Synonyms

Aldosterone/renin ratio,
ARR,
Saline Suppression Test

Specimen Type

• Plasma

Specimen Requirements

Tube/Container Type:

Preferred

• EDTA (Lavender Cap)

Acceptable

• Lithium Heparin - Non-gel (Green Cap)

Preferred Sample Volume (ml)

4

Minimum Sample Volume (ml)

1

Collection instructions:
IMPORTANT:
Aldosterone for AVS Sampling are done on heparin tubes. (Can be stored at 4 degrees). ALL other aldosterone samples MUST be done on EDTA.
One EDTA sufficient for both aldosterone and renin.

Laboratory instruction:
Separate and send any samples also requiring Renin, at ROOM TEMPERATURE.
DO NOT STORE at 4'C. This may lead to a falsely elevated Renin result.

As a precaution, it is best if both routine Renin and Aldosterone samples are stored and transported at RT as indicated on the aliquot label.

Contact Information