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HelpTest Code LAB4167 POTASSIUM, URINE 24 HOUR
Specimen Type
24-hour urine collection
Collection Instructions
Collect a 24-hour urine in a 24-hour dark plastic urine container. Refrigerate during collection. Record Collection start and stop times.
Specimen Volume
50 mL
Minimum Volume
40 mL
Turnaround Time
STAT: 1 hour
Routine: 4 hours
Test Schedule
Daily
Sample Stability
Room Temperature: 45 Days
Refrigerated: 2 Months
Frozen: 1 Year
Specimen Processing
Invert 24 hour urine container several times to mix the specimen.
Aliquot 50 mL of a well-mixed 24-hour urine collection into a leakproof plastic urine container.
Aliquot 5 mL into a transparent red top tube.
Record collection time and total volume.
Freeze 50ml Specimen Aliquot.
Method
Indirect ISE (Ion-selective electrode)
Reference Ranges
| Potassium, 24-hr urine, mmol/24 Hrs | ||
| Male | Female | |
| 0-6 Years | None Established | |
| 6-10 Years | 17.0 - 54.0 | 8.0 - 37.0 |
| 10-14 Years | 22.0 - 57.0 | 18.0 - 28.0 |
| >14 Years | 25.0 - 125.0 | |
Synonyms
K, Urine
Test Components
Collection Period, h; Volume, mL; Potassium, Urine, mmol/24h.
CPT Codes
84133