| A B C D E F G H I J K L M N O P Q R S T U V W X Y Z # |
Sodium Fractional Excretion, Serum
MessagePerforming Lab: Lakeview, Regions, Westfields
Test Code
EP3602
Alias/See Also
Sunquest: FENA
CPT Codes
84295; 82565
Includes
Sodium (Serum & Urine); Creatinine (Serum & Urine); Fractional Excretion calculation
Preferred Specimen
0.2 mL Lithium Heparin Plasma (light green-top) tube
Minimum Volume
0.1 mL
Other Acceptable Specimens
Serum separator (gold-top), Lithium Heparin (light green-top) on ICE, Red, Red/Gray
Instructions
Ordering:
Ensure urine specimen is collected (FENAU)
Ensure urine specimen is collected (FENAU)
Transport Temperature
Refrigerated
Specimen Stability
Room Temperature: 4 days
Refrigerated: 7 days
Frozen: 6 months
Refrigerated: 7 days
Frozen: 6 months
Methodology
Potentiometric (Sodium), Two-Point Rate (Creatinine) )
Setup Schedule
Hospital: Daily
Clinics: Monday - Friday
Clinics: Monday - Friday
Report Available
Same day.
Reference Range
See indivudal tests for reference range
Clinical Significance
Evaluate suspected renal diseases that affect sodium clearance.
