FBR is the expert on this but from what I remember a swab test is like a blood test only 3 or 4 days detection time.
killerweed420 Reviewed by killerweed420 on . how do you pass a swab test?? I have a drug test coming up in a week... I've been taking Niacin & Goldenseal for a week & a half. Took one of those home drug tests & failed it.. been smoking for about 43 yrs on a daily basis.. have quit for about a month now.. I thought the test was going to be a UA but instead they do a mouth swab... where they use your saliva... does anyone know of how you would pass this type of test? really could use some help here! Thanks Rating: 5