Sodium, 24 Hr Urine with Creatinine Ratio : 1002712

Test Code
UR24NA or 1002712

Alias/See Also
Na, Urine; Sodium, Urine

CPT Codes
84300, 82570

Instructions
24 hour urine without preservative (keep refrigerated).

Transport Container
Submit a 10 mL aliquot (Min. 0.5 mL) of the well-mixed 24 hour urine collection in a screw capped container or in a standard transport tube.

The total volume of the urine in mL and the time period of collection in hours must be provided.

Transport Temperature
Refrigerated.

Specimen Stability
Ambient: 24 hours; Refrigerated: 7 days; Frozen: Acceptable for longer storage

Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
No period or volume.

Methodology
Ion Selective Electrodes (ISE) Indirect, Enzymatic

Setup Schedule
Sunday - Saturday

Report Available
1 day

Reference Range
Sodium, Urine: 40-220 mmol/24 hours
Creatinine, Urine:
Female: 600-1800 mg/24 hours; Male: 800-2000 mg/24 hours
Sodium/Creatinine Ratio:
Female: 50-230 mmol/g CRT; Male: 30-180 mmol/g CRT
Reference Range assumes a 24 hour collection.

Clinical Significance
Monitor electrolyte imbalance, abnormal hypertension, dehydration.

Performing Laboratory
med fusion



The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.