1 x 5 mL light green (mint) top PST tube. Gold top SST tube is also acceptable.
0.2 mL heparinized plasma or serum Minimum Blood Volume for Patients less than 45 kg (100 lb) Including Neonates and Pediatrics
0-5 years
18-27 mmol/L
6-150 years
21-31 mmol/L
