Test Details

Mnemonic

UALDO

Ordering Code

3670910

CPT-4 Code(s)

82088

Specimen Information

Collect

24 hour urine, must be refrigerated during collection
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Specimen Preparation

Add 1.0 g boric acid/100 mL urine mix well and send 4.5 mL aliquot boric acid preserved urine frozen in a sterile screw capped plastic urine container. Record total volume on test requisition and specimen label.
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Alternate Specimen

6M HCl or Acetic acid preserved urine (pH adjusted to 2-4), refrigerate.
Unpreserved urine frozen immediately after collection.
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Minimum Volume

0.5 mL
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Transport Temperature

Frozen
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Stability

Room temperature: 2 hours
Refrigerated (with preservative): 5 days
Frozen: 30 days
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Methodology

Quantitative Radioimmunoassay
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Reference Range

Aldosterone:
Normal diet: 6 - 25 µg/d
Low salt diet: 17 - 44 µg/d
High salt diet: 0 - 6 µg/d

Normal urine values of aldosterone are dependent on sodium intake.

Normal sodium intake: 100 - 200 mEq
Low sodium intake: <25 mEq
High sodium intake: >200 mEq

Creatinine (24-hour): Male: Female:
3 - 8 yrs: 140 - 700 mg/d 140 - 700 mg/d
9 - 12 yrs: 300 - 1300 mg/d 300 - 1300 mg/d
13 - 17 yrs: 500 - 2300 mg/d 400 - 1600 mg/d
18 - 50 yrs: 1000 - 2500 mg/d 700 - 1600 mg/d
51 - 80 yrs: 800 - 2100 mg/d 500 - 1400 mg/d
≥81 yrs: 600 - 2000 mg/d 400 - 1300 mg/d
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Performing Laboratory

ARUP Reference Laboratory
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New York DOH Approval Status

Yes
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