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

Valproic Acid (Depakene)

346 - 700 μmol/L

>700 μmol/L

8 - 15 hrs

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Available tests