What are the Different Types of Drug Tests?
Several types of drug tests are used to determine whether you have been ingesting drugs. The different drug tests each have pros and cons that will determine which one is used on different occasions. Since drug use can be detected in hair, body fluids and hair, drug testing can be done on specimens of your hair, urine, blood, saliva, and sweat. Hair specimens can tell much about your use of a wide variety of drugs, including marijuana. Not only can hair specimens reveal information about a variety of the drugs that you may have been ingested, hair specimens will provide a history of your recreational drug use depending on how long the hair specimen is. The only information that hair specimens may not provide is that concerning your most recent use of drugs. Testing blood for drugs will give an accurate picture of your drug use. The high price of blood tests and the invasiveness of the blood test prohibit many companies from using this drug test.
Blood Tests – Often people will be given a blood test and a urinalysis. These are for two totally different types of tests being performed. Blood is normally drawn for detection of diseases such as AIDS. Drug toxins can only be detected for 48 hours in the blood after consumption. For this reason the urine is tested for toxins instead of the blood. Hair Tests – Toxins are circulated throughout the body via the blood stream. The blood feeds the hair while it is in the growth stage at the scalp. As the hair is formed the toxins are trapped inside the hair folic. The toxins then grow away from the scalp as time passes. If the use of toxins is stopped, the hair by the scalp is clean, but the middle of the hair or ends of hair will retain the toxins until cut off. The level of toxins is greatest near the scalp. Sunlight and chemicals added to the hair in dyes or shampoos will oxidize the drug metabolites over years, and can reduce the level of metabolites by 75%. For this reason, the hair s
