For cytochrome P450 tests, a sample of your DNA is taken for lab testing. It can be retrieved in one of three ways:
- Blood test. Blood is drawn from a vein in your arm.
- Cheek swab. A cotton swab is rubbed inside your cheek to get a cell sample.
- Saliva collection. You will be asked to spit saliva into a collection tube.
After the procedure
Getting the DNA sample should take just a few minutes. Whichever type of test you have, your sample will be sent to a lab where your DNA is analyzed for specific genes.
Aug. 21, 2015
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