- Container
- Red top or Serum seperator marked "SERUM" Non-additive tube marked "URINE"
- Component
- Serum: Calcium, Chloride, Creatinine, Phosphorus, Sodium, Potassium Urine: Calcium, Chloride, Creatinine, Phosphorus, Sodium, Potassium
- Specimen
- 1.0 mL serum AND 1.0 mL urine
