ARUP's Laboratory Test Directory

Aldosterone, Serum : 0070015

Mnemonic: ALDOST

Methodology: Radioimmunoassay
Performed: Sun-Sat
Reported: 2-4 days
Specimen Required: Collect:  One 6 mL plastic serum separator tube.

Transport:  1 mL serum, frozen.  (Min: 0.5 mL)  Submit specimen in an ARUP Standard Transport Tube.

Pediatric Collection/Transport:  0.5 mL serum, frozen.

Remarks:  If an upright specimen is collected, patient should be upright (seated or standing) for at least two hours. Heparinized plasma is also acceptable.

Unacceptable Conditions:  EDTA plasma.

Stability:  After separation from cells: Ambient: 4 hours; Refrigerated: 1 week; Frozen: 1 month
Reference Interval:
 
Age Posture Unspecified Supine Upright
0-6 days 5.0-102.0 ng/dL   
1-3 weeks 6.0-179.0 ng/dL   
1-11 months 7.0-99.0 ng/dL   
1-2 years 7.0-93.0 ng/dL   
3-10 years 4.0-44.0 ng/dL   
11-14 years 4.0-31.0 ng/dL   
15 years and older 31.0 ng/dL or less 16.0 ng/dL or less 4.0-31.0 ng/dL

Interpretive Data: Normal serum levels of aldosterone are dependent on the sodium intake and whether the patient is upright or supine. High sodium intake will tend to suppress serum aldosterone, whereas low sodium intake will elevate serum aldosterone. The reference intervals for serum aldosterone are based on normal sodium intake.
CPT Code(s): 82088
 
 

 

 

 
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