Digoxin
Sample: Serum (Taken just before the next dose)
Schedule: Daily
Units: ng/mL
Range: Therapeutic Range: 0.8 - 2.0 ng/mL (Convertion: 1.275 ng/mL = nmol/L)
Remarks: Digoxin is indicated for systolic heart failure and control of supraventricular tachyarrythmias.
| Drug | Therapeutic Range | Toxic Level | Half-Live |
| Carbamazepine (Tegretol) | 8 - 12 μg/mL | > 12 μg/mL | 15 - 40 hrs |
| Digitoxin | 18 - 35 ng/mL | > 35 ng/mL | 150 - 250 hrs |
| Digoxin | 0.8 - 2.0 ng/mL | > 2.0 ng/mL | 20 - 60 hrs |
| Phenobarbital | 20 - 40 μg/mL | > 40 μg/mL | 50 - 140 hrs |
| Phenytoin (Epanutin) | 10 - 20 μg/mL | > 20 μg/mL | 20 - 40 hrs |
| 346 - 700 μmol/L | >700 μmol/L | 8 - 15 hrs |
