- Scent detection Canines
Canine detection method is one the most accurate methods of drug detection as observed today. They make use of trained canines to sniff the suspected item to confirm the presence of any such drugs such as cocaine, morphine etc. The canines are trained well in hand before subjected to such drugs to train them on to detecting them for purposes.
- X-ray Screening
X-ray detection is a method of scanning the traveler’s materials where the travelers are told to drop their items on a conveyer belt which then passes the material through a high powered dual energy X-ray emitter. The X-ray emission penetrates the material displaying a high resolution image of the contents to the officials viewing it via display screens it displays the exact contents of the items with different color patters indicating separating materials into organic , inorganic and metal . Most of the narcotics generally being organic radiate back high levels of X-rays which are easily picked up by the detectors and show an orange image on screen and necessary action is taken. This system works by letting the materials to observe the x-rays initially and then record the absorbed levels from each object, all objects absorb the x-rays but in any case if radiation is not seen the officials move on to manual checking. This is also considered amongst most accurate methods after the scent detection Canines but does have flaws as lead shielding or polyvinyl could conceal the bombs (drugs).
- Biometric Scan
This is a technology which is yet to be implemented but has gone sufficient testing and is said to be precise but could lead to misinterpretations. Biometric scans are basically a united name for technological use of retina, fingerprint and facial pattern scans. A 64MA CCTV camera equipped with retina analyzer and temperature sensor is fixed in the scanning area. The camera records the body temperature, sweat fluid level and facial patterns of the traveler rapidly as he goes through passport verification and produces instant report that is viewed by the official. Any such rapid change in facial pattern and increased sweating would be reported. Constantly the retina analyzer with the aid of a 10PX Camera auto aligns to the travelers retina and checks for verification from database also informs the official if any dilution or blood shot eyes are noticed since drug consumers usually show such symptoms after immediate consumption .If any such traveler does not pass the test he is held up by the officials for further tests. The use of biometrics however needs a vast collection of database of the travelers to be used in detection purposes which might lead to a delay, it is said to be brought to application in 2012.
Here are some of the basic detection methods that could be out listed most of the tests
- Urine Drug Testing
- Saliva Drug Testing
- Spray (Sweat) Drug Testing
- Hair Drug Testing
- Urine Drug testing
Urinalysis is the most common test type and used by federally mandated drug testing programs, yet likely the least effective. This involves the sampling of the subject’s urine and testing it against the presence of any such drug traces this method however has proved to be quite inaccurate since there are possibilities of the subject to bypass the test by altering the sample with any such neutralization chemicals such as water while told to take the sample . This testing has to be done within a short period of the subjects exposure to drugs otherwise might be inaccurate.
- Saliva Drug testing
Saliva (oral) drug test are very donor friendly, non-invasive and easy to collect the specimen since there is no need for a bathroom to administer the tests. Saliva drug testing tends to detect recent drug use also these drug tests are harder to adulterate than the urine drug tests since the sample can be obtained under direct supervision which increases the chances of accuracy. Depending on the test, up to 8 different drugs could be detected. This method is the best method for determining recent use and is a potential indicator of impairment.
- Spray(Sweat ) Drug Testing
Spray (sweat) drug test are non-invasive. It is very easy to collect the specimen .The detection window is long and usually can detect drug use up to a couple of weeks. These drug tests are relatively tamper proof since they are hard to manipulate... This method is however also has chances of inaccuracy since there are chances of high level of contamination from external sources since it is sweat that’s been tested for drug traces.
- Hair Drug Testing
Hair drug testing can provide a much longer window of detection hair samples from anypart of the body such as facial hair, the underarms, arms, and legs can be taken into testing of drug traces. This method has proved to be highly accurate since there is no known way to adulterate a hair specimen in order to falsify the results of the test but is considerably much more expensive than the other methods.
