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Also known as: Phenobarbitone
Formal name: Phenobarbital

At a Glance

Why Get Tested?

To find out if the phenobarbital level in the blood is at an appropriate level for an individual patient

When to Get Tested?

At regular intervals to monitor phenobarbital levels in the blood and if needed to detect low or toxic levels

Sample Required?

A blood sample taken from a vein in your arm

Test Preparation Needed?