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Urea

Category Biochemistry
Test background

Electrolytes are usually measured as part of a renal profile, which measures sodium, potassium, creatinine and urea. Serum urea correlates with catabolic states and increases during tissue/organ trauma, while circulating levels are a good indication of a patient’s overall hydration status and/or kidney function.

Clinicial Indications

Suspected renal failure. Monitoring of patients receiving intravenous fluids Monitoring of established chronic kidney disease

Reference range
Adult 2.5-7.8 mmol/L
1-16 years 2.5-6.5 mmol/L
1-12 months 1.0-5.5 mmol/L
Less than 1 month 0.8-5.5 mmol/L
24 hour urine 200-600 mmol/d

 

Sample & container required SST (gold top) 24 hour urine collection
Sample volume Blood: 0.5 mL. Urine: 24 hour collection
Turnaround time Blood: 1 day. Urine: 2 days