Will nicotine cheek swab test detect cannabis?
No, it'll only detect nicotine.
Today, DNA test can be done in the comfort of your home. You can do a blood DNA test or buccal (cheek swab DNA) test for a very small cost. With the blood DNA testing, you prick your finger and send the results in for analysis. With buccal or cheek swab DNA testing, you swab your inner cheek and send the sample in for analysis. Results are available within 5 to 7 days!
Anything that can destroy cells. The cheek swab collects cells, which are then used to extract DNA for testing. To my knowledge, there is nothing short of cellular destruction that can impede the collecting of a sample for a DNA test, since the test is actually conducted on the DNA extracted from INSIDE the cell, not just the swab.