Specimen:

Serum

Collection Medium:

Minimum:

Adult minimum: 1.0 mL serum from red top tube
Absolute Adult minimum:  0.5 mL serum from red top tube
Pediatric minimum: 0.5 mL serum from red top tube

Delivery Instructions:

Deliver to laboratory immediately after collection.

Analytic Time:

4 working days

Reference Range:

Age                 Posture Unspecified
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

Age                   Posture - Supine      Posture - Upright
15 years and older    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.

Comments:

If an upright sample is collected, patient should be upright (seated or 
standing) for at least two hours.

Methodology:

Radioimmunoassay

CPT Code:

82088

See Additional Information:
Specimens Requiring Immediate Delivery