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Theophylline and Caffeine

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Also known as: Aminophylline [Often referred to by brand names (see MedlinePlus Drug Information)]
Formal name: Theophylline; Caffeine

At a Glance

Why Get Tested?

To determine the concentration of theophylline or caffeine in the blood to establish an appropriate dose and to maintain a therapeutic level

When to Get Tested?

At the start of drug therapy and at regular intervals to monitor the drug's concentration; when indicated, to detect low or excessive (potentially toxic) concentrations

Sample Required?

A blood sample drawn from a vein in your arm or from pricking an infant's heel

Test Preparation Needed?