1 x 5 mL light green (mint) top PST tube. Gold top SST tube is also acceptable.
Minimum Blood Volume for Patients less than 45 kg (100 lb) Including Neonates and Pediatrics
Collect specimen 0-60 minutes prior to next dose, or at least 8 h post dose.
RECORD time of last dose on requisition.
For additional information, see Half-life and time to Steady State.
Therapeutic range
1.0 – 2.6 nmol/L
Evidence-based therapeutic range for CHF
0.5 – 1.0 nmol/L
Click here for critical values
