Methods of Drug Testing

Drug testing is frequently done to identify if an illegal drugs has been introduced into the system and it can be determined in blood, urine, hair and other body fluids. Among these, the most common type of drug test is urinalysis or by submitting and using urine sample. An individual who will undergo the test will be requested to urinate into a specimen cup. The urine sample is then examined with chemical test. The test may identify the presence of illegal drugs. It also detects a chemical produced during the breakdown of the drug in the system.

drug and alcohol

Any substance that will go through the body undertakes chemical deviations. For an instance, foods are broken down into pieces by the digestive sys­tem into simple sugars, amino acids, and other substances. These matters are then used by cells to create energy and different mixtures needed by the body. Metabolites are the substances that were formed during the breakdown process. During drug testing it identifies the presence of drug metabo­lites not the illegal drugs. The significance of this explanation for drug testing in the workplace is that a urine procedure naturally displays what drugs were used at some time in the previous early years or few hours earlier. That drug use might happen all through a person’s secluded and none working time. If the individual has positive result, it will not determine his/her ability to perform his/her job.

Several strategies are available for the drug testing. The enzyme-multiplied immunoassay tech­nique (EMIT) is the most typical used for today. During the procedure, sample of urine is being combined with a substance. The chemical combines with drug metabolites in the sample. Distinctive color was produced on the mixture of chemical and drug metabolite. The existence of the color therefore concludes that there is a presence of drug metabolites. Thin-layer chromatography (TLC) is another procedure that is commonly used and this is much easier compared to EMIT. During the procedure a urine sample is being combined with chemicals and passed down a band of filter paper. Metabolites in the urine sample detached out as spots on the testing band. The occurrence of an “amphetamine spot” on the strip shows the presence of an amphetamine metabolite in sample provided. .

For more information about the procedure you may visit


Posted on December 11, 2014, in drugs, health, medical equipment and tagged , , . Bookmark the permalink. Leave a comment.

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