Geisinger Medical Laboratories/Geisinger Proven Diagnostics Test Catalog

Order Display Name: Geisinger Epic Procedure Code Or ID CPT Code:  


Geisinger Epic Procedure Code: LAB3869         Geisinger Epic ID: 18875

Specimen type:
24-hour urine
Preferred collection container:
Alternate Collection Container:
24-hour urine container (no preservative)
Specimen required:
5 mL aliquot of 24-hour urine; minimum 1 mL.
Special notes:
Collect urine with 10 grams of boric acid to maintain pH below 7.5. Refrigerate during and after collection. Sample without preservative is acceptable if kept refrigerated during collection. It is acceptable to add preservative after collection if urine was refrigerated during collection. Mix well. Estimate total collection volume from 24-hour urine container. Remove required aliquot. Record total volume on both aliquot tube and request slip (if applicable).

Transport temperature:
Refrigerated (preferred )or frozen.
Specimen stability:
Room Temperature: 7 days. Refrigerated: 28 weeks. Frozen: 21 years.
Rejection criteria:
Stability limits exceeded. Urine collected with HCl is unacceptable.

Reference interval:
Random Sodium diet
2-7 years: 5.7 mcg/24 h or less
8-11 years: 10.2mcg/24 h or less
12-16 years: 15.6 mcg/24 h or less
Adult:  2.3-21.0 mcg/24 h

Post Florinef(TM) or IV saline suppression: 5 mcg/24 h or less
Creatinine, 24-Hour Urine
<3 years: Not established
3-8 years: 0.11-0.68 g/24 hours
9-12  years: 0.17-1.41 g/24 hours
13-17 years: 0.29-1.87 g/24 hours
Adult: 0.63-2.50 g/24 hours
CPT code(s):
Note: The billing party has sole responsibility for CPT coding.  Any questions regarding coding should be directed to the payer being billed.  The CPT codes provided by GML are based on AMA guidelines and are for informational purposes only.
Test includes:
Aldosterone, 24-hour urine.
Liquid Chromatography-Tandem Mass Spectrometry (LC-MS/MS)
ALDO24, Quest test code 13856

Performing Locations

Quest Diagnostics

Technical Lead: Michael Weaver    
Frequency: Sun, Tues nights; Report available: 4-10 days.    
Performed stat? No
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