Urine is the major excretory pathway in our body which makes it one of the most common used samples for drug testing. Almost every drug that enters our body finds its way to the liver, gets metabolized and finally makes its way out of the body through the renal system. This forms the basis of urinalysis drug test. It is not only the drugs but also every substance can be detected in urine.
The main reason for performing urine drug test is that the drugs or its metabolites become soluble in aqueous solutions after metabolism in liver and are expressed in detectable quantities in urine above the normal cut off concentrations. These metabolites or the drug when exposed to specific chemicals react in specific pathways leading to production of different substances and indicate a change in color when colorimetric agents are added. Such a reactive chemical with an indicator is incorporated in small strips that are easy to use.
Another advantage of using these urine drug testing kits is that it can be performed at any time during the day and the kit is compact enough to be carried around. All you have to do is to collect the urine in sterile containers and dip the strip in the sample up to the indicated level and leave it for 5 minutes. Then the result can be read instantaneously. Urine drug tests in the cases of pregnancy testing for women is very popular and moreover hormonal level tests in urine helps to monitor even ovulation status in a woman.
This type of drug testing can be done either in the laboratories or using simple home based drug testing kits. You can have only a qualitative analysis in the latter form of drug testing in urine. If you do a urine drug test at home and have a clean urine drug test, then you can face your pre employment screening with confidence. Further Urine is a good indicator for almost any diseased condition in our body. Even if you are ill or suffer from any disease, the urine samples will surface them either on gross examination or in microscopic examination.
Finally coming to the cost of drug testing, the entire procedure would just take few bucks off your pocket money with out leaving a big strain in your economy. Multi panel drug testing further augments the cost effectiveness. You can detect several drugs in a single test.