|Available:||Daily, 24 hours|
|Turnaround:||Routine: 3 hours, STAT: 30 minutes|
|Container:||3 mL green top tube or green microtainer (sodium heparin)|
|Temperature:||Transport to laboratory within 30 minutes.|
|Rejection:||Greater than 1 hour in transport. Gross hemolysis.|
0 days:4.5-7.2 mmol/L
1 day: 5.0-7.7 mmol/L
2 days: 4.0-6.4 mmol/L
14 days: 4.0-6.2 mmol/L
3 months: 3.7-5.6 mmolq/L
16 years:3.5-5.3 mmol/L
|Uses:||Evaluation of electrolyte balance. Must be followed in patients on diuretic therapy and with renal diseases, especially in salt losing nephropathy.|
|Limitations:||Hemolysis increases potassium results.|
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