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Test Code URNA(timed), RNA (random) Sodium, Urine

Specimen Type

Urine, timed (24 hour) or random collection

Container

Urine,random or timed 24 hour

Preferred Volume

4 mL

Offsite Collection Instructions

Collect without additives.  Sample may be random or timed collection.  If collection duration is not specified, specimen will be considered a random sample.

For timed specimens, send 10 mL of a well mixed sample. Indicate start and end time and total volume.

UCMC Collection Instructions

Collect without additives.  Sample may be random or timed collection.  If collection duration is not specified, specimen will be considered a random sample.

Availability

24/7

Turnaround Time

3 hours

STAT Availability

Not Available

Test Methodology

ion selective electrode

CPT Code

URNA: 84300

RNA: 84300

Test Includes

quantitative determination of sodium in urine

Reference Range

timed: 40 – 220 mEq/24 hour
random: Reference ranges for random urine specimens have not been established; subject to ordering physician interpretation only.

Critical Results

None

Minimum Volume

2 mL

Fee Code

URNA: 43447

RNA: 43447