The ionic composition of interstitial and intravascular fluids is the same. Proteins, however, are kept with the vascular compartment, at least to a degree, by the vascular wall, which is a semi-permeable membrane. The concentration of proteins is much higher in the plasma sector than in the interstitial sector.
Detection of marijuana using swab drug test can vary from person to person taking into account the different conditions like general health, different fluid intake, metabolism, etc.
How long can marijuana be detected by a mouth swab test? 3-5 to 10 days, depends on how much you smoke, weed quality,some times your height and weight (saliva mimics results found with blood, so if you are heavy user with allot bo â¦ dy fat detection time its longer) etc..he longest detection time story i have ever heard that was true detected use 1 week and 1 day ago, and that was from someone who would smoke 3-4 joints a day.So the best way to pass saliva test is simply by abstinence from weed 3-4 days before your test. 11 people found this useful. Up to 3 days.