At one time employers feared the announcement of an unplanned urine drug test. Then as they learned how to tamper with a urine sample, their fears changed. Then they began to fear announcement of a blood drug test. Now some Internet sites offer employees a way to disguise a toxic substance in a blood sample. Regardless of that discovery, employers continue to favor the blood drug test. In order to counter the possible use of Visine in a test sample of urine, employers now count on the accuracy of the blood testing procedures. They augment that accuracy by using unscheduled drug testing.

A nervous employee searching on the Internet for a product that can cleanse the body of a toxic substance will find a wealth of information. Some of that information relates to the detection times in blood test drug cleansing procedures. That information shows that drug cleansing procedures are dependent on the characteristics of whatever drug an employee might be using.

Marijuana is the drug that appears to stay in the body the longest. A person who smokes marijuana could have that substance in his or her blood for as long as 11 weeks. If that individual anticipated the need to take a blood drug test in the near future, then he or she would want to have a blood system that was free of marijuana.  For that reason, such an individual would probably want to invest in the items needed for a 30 day or 15 day cleansing procedure.

An employer who has established a daily routine that includes use of a toxic substance other than marijuana would probably want to purchase the supplies needed for a 10 day cleansing procedure. Like all cleansing procedures, the 10 day procedure is designed to rid the blood stream of a toxic substance prior to the collection of a blood sample for a blood drug test.

At this point the reader is probably wondering why an employer would use a test that could give a false negative result, due to the use of a cleansing product. The reader might be surprised to learn that employers tend to favor the blood drug test over the urine test. Why do they favor that test? They favor that test because it is easier to tamper with a urine sample than it is to tamper with a blood sample.

In the past, employees have used Drano, bleach, vinegar, soap, salt, lemon juice and Visine to disguise the presence of a toxic substance in a urine sample. Eventually employers found that the use of Drano, breach or vinegar could be discovered by looking for an unexplained change in the pH of the urine. They found that soap made the urine appear cloudy, and salt caused a change in the density of the urine. Employers also found that lemon juice failed to disguise the presence of a toxic substance in the urine.

Still, employers remained unable to find a way to detect the presence of Visine in a urine sample. That inability has contributed to the increasing use of the blood drug test. By using the blood drug test in concert with unscheduled drug screening, employers are more readily able to pick-up evidence of drug use by any employee. The detection of such drug usage aids the development of an alert and efficient workforce.