Clonazepam Level (Blood)
Does this test have other names?
Klonopin blood level
What is this test?
This test measures the amount of clonazepam in your blood.
Clonazepam is a medicine used to treat seizures. It's often prescribed to adults and
children who suffer from partial seizures and spasms. It may also be used to treat
panic attacks, insomnia, and generalized anxiety. It's a type of medicine called a
Why do I need this test?
You may have this test if it's possible you have taken an overdose of clonazepam.
The test can also be used to monitor the level of clonazepam in your system throughout
You may also have this test if you are having side effects from clonazepam. These
might be drooling, sleepiness, lack of muscle coordination, difficulty breathing,
suicidal thoughts, and drowsiness.
What other tests might I have along with this test?
Your healthcare provider may also order other tests, including:
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
Results are given in micrograms per milliliter (mcg/mL). Therapeutic medicine levels
can range from 0.02 to 0.08 mcg/mL. Any level over 0.08 mcg/mL is considered toxic.
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?
Taking other antiseizure medicines may affect your results. These include valproate
and phenytoin. Both clonazepam and 7-aminoclonazepam break down easily. Your results
may not be accurate if the sample is not handled properly.
How do I get ready for this test?
You don't need to prepare for this test. But be sure your healthcare provider knows
about all the medicines, herbs, vitamins, and supplements you are taking. This includes
medicines that don't need a prescription and any illegal drugs you may use.