Fractional Excretion of Electrolytes
- Test Code
- CL340
- Results:
- 1-2 days.
- Specimen
- 1.0 mL serum in red top or serum separator tube AND 1.0 mL urine in urine transport tube (label samples accordingly as URINE or SERUM).
- Test Description
- Serum: Calcium, Chloride, Creatinine, Phosphorus, Sodium, and Potassium.
Urine: Calcium, Chloride, Creatinine, Phosphorus, Sodium, and Potassium.
Note: Serum and urine MUST be drawn and submitted TOGETHER.