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.
A urine drug test can detect marijuana as soon as 2 to 5 hours after use. However, the bigger question is how long will it still be detected with a THC urine drug test.The length of time marijuana is detected in urine depends on the amount used, frequency of use and the user's weight and body fat.ou can also test for more drugs at a time than you can with any of our other convenient at home drug tests. Despite these advantages, a marijuana urine test may not suit your needs as well as a marijuana saliva test or a marijuana hair test.