Samples must be collected at the same time. Collect urine in red top tube. Collect blood in red top or green top tube, separate serum/plasma promptly.
Refrigerated, in leak proof tube(s). Overnight or 2-day shipping is recommended.
Note: Furosemide alters values and should not be used prior to sample collection. **Electrolytes are $12 each with the exception of $24 for Creatinine. * Results available same day if received by 4:00 pm.