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HelpTest Code NA U QNT Sodium, 24 Hour Urine
Clinical System Name
Urine Sodium Quantitation, 24 Hour
Sample Requirements
Specimen: Urine
Container(s): 24 Hour Urine Jug
Preferred Vol: Entire volume from 24 hr collection.
Minimum Vol: N/A
Note:g No preservatives are needed to start collection. Go to clinical lab with patient label to obtain urine jug. Refrigerate sample during collection period. Document start and stop dates/times, along with patient information. Deliver labeled jug to Clinical Lab upon completion.
Processing Instructions
Reject due to:
Spin: N
Aliquot: N
Temp:2-8C
Storage location: CPA Refrigerator, FrigB bucket, with patient labels. Timed collections other than 24 hr are acceptable.
Off-site collection: Send urine in original container refrigerated.
Stability
| Specimen Type | Temperature | Time |
|---|---|---|
| Room temp | ||
| Refrigerated | 7 d | |
| Frozen |
Availability
| STAT | Performed | TAT |
|---|---|---|
| N | M - F | 1 - 3 d |
Performing Laboratory
Seattle Children's Laboratory
Department
Department: Chemistry
Phone Number: (206) 987-2617
CPT Codes
84300
Methodology
Method: Potentiometric - ISE by Vitros 4600
Analytical Volume: 10 mL
Limitations:
Reference Range
50 - 225 mEq/ 24 h
Results vary with dietary intake.