Sodium, Urine

Cleveland Heartlab S, Test

CPT Code: 84300
Order Code: C2703
ABN Requirement: No
Specimen: Urine
Volume:  5.0 mL
Minimum Volume:  1.0 mL
Container: Urine (Yellow top, no preservative) tube



  1. Collect and label urine sample according to standard protocols.
  2. Transfer urine from a clean urine cup into a Yellow Top tube using the vacutainer transfer device included with the Yellow Top tube.
  3. Cap tube tightly.
  4. Label sample according to standard protocols.

Transport: Store urine at 2-8°C after collection and ship the same day per packaging instructions provided with the Cleveland HeartLab shipping box.


Ambient (15-25°C): 7 days
Refrigerated (2-8°C):
7 days
Frozen (-20°C):
7 days
Deep Frozen (-70°C):
7 days

Causes for Rejection: Specimens other than urine without preservatives; improper labeling; samples not stored properly; samples older than stability limits

Methodology: Ion Selective Electrode (ISE)

Turn Around Time: 2-3 days

Reference Range:

All Ages14-216

Intended Use: Evaluation of renal function, electrolyte balance.

The CPT codes provided 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 payer being billed.