Fluphenazine Drug Level (Blood)
Does this test have other names?
What is this test?
This blood test measures the amount of the medicine fluphenazine in your blood. Fluphenazine
is an antipsychotic medicine used to treat schizophrenia and Tourette syndrome. Fluphenazine
helps you think more clearly. It also improves social exchanges, paranoia, and disposition.
It can also help reduce involuntary movement related to Huntington chorea. The medicine
can take up to 6 weeks to work as it should.
Fluphenazine also has potentially severe side effects and should be taken with caution.
Older adults who use this medicine for dementia are at a higher risk of dying. It
is not safe to use this medicine if you are allergic to it. You should not take this
medicine if you have brain problems, a low blood cell count, or liver disease, or
if you are breastfeeding.
Why do I need this test?
You may have this test if it's possible that you have overdosed on fluphenazine or
if you have dangerous side effects of the medicine. These include:
Tightness in your chest
Swelling in your face, lips, tongue, or throat
Extreme dizziness or fainting
Inability to urinate
If you have any of these symptoms or believe you have overdosed on the medicine, call
your healthcare provider or 911 right away.
What do my test results mean?
Many things may affect your lab test results. These include the method each lab uses
to do the test. Even if your test results are different from the normal value, you
may not have a problem. To learn what the results mean for you, talk with your healthcare
The normal range of fluphenazine in the blood if taken as prescribed is 0.3 to 3 nanograms
per milliliter (ng/mL).
You can have side effects with any dose of fluphenazine.
How is this test done?
The test requires a blood sample, which is drawn through a needle from a vein in your
Does this test pose any risks?
Taking a blood sample with a needle carries risks that include bleeding, infection,
bruising, or feeling dizzy. When the needle pricks your arm, you may feel a slight
stinging sensation or pain. Afterward, the site may be slightly sore.
What might affect my test results?
No other factors are likely to affect your test results.
How do I get ready for this test?
You don't need to prepare for this test.