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Digoxin

Source Blood
Mnemonic DIG
Specimen Requirements

1 x 3 mL light green (mint) top PST tube.  Gold top SST tube also acceptable.

Minimum Whole Blood Volumes for Micro-Collections using Microtainers

Collect specimen at least 8 h post dose.

Specimen Handling
Additional Information Record time of last dose on requisition.

Optimally, collection of specimen should be 0-60 min. prior to next dose (trough level)

For additional information, see Half-life and Time to Steady State.
Testing Location
Testing Frequency Daily
Alternate Name(s) Lanoxin
Reference Interval

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