Blood Urea Nitrogen (BUN); Creatinine; GFR Calculation
1.0 mL Plasma from a PST Mint Green Top Tube - Li Heparin (preferred)
or
1.0 mL Serum in a SST Gold Top Tube
1.0 mL Serum from a Red Top Tube in a Plastic Vial
or
1.0 mL Plasma from a Green Top Tube - Li Heparin in a Plastic Vial
7 days Refrigerated
72 hours unspun
0.5 mL
Blood Urea Nitrogen
Blood Urea Nitrogen:
NICU (Infants in a Parkview Health Neonatal Intensive Care Unit): >50 mg/dL
Pediatric to Adult: >100 mg/dL
Creatinine: >10.0 mg/dL
GFR will not reflex if patient is less than 18 years of age
01420102, 01420086
84520, 82565