Phenobarbital

Also known as: [Often referred to by brand name (see MedlinePlus Drug Information)]

Formal name: Phenobarbital

At a Glance

Why Get Tested?

To determine if the phenobarbital level in the blood is at a therapeutic level for an individual patient

When to Get Tested?

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

Sample Required?

A blood sample drawn from a vein in your arm

Test Preparation Needed?

None

This article was last reviewed on November 12, 2008. | This page was last modified on March 6, 2010.

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