Drug tests can be used to recognise past drug consumption or topical Dysfunktion. Pre-Employment mass screenings, e.g., to the recognition are aimed a pattern of the drug consumption in the past rather than the present interferences. To recognise postal accident tests for the running depreciation. The exactness and the forensic or juridical standards stresses drug tests in a criminal connection necessarily.
Terminology
Drug test is an extremely technical area, with complicated subjects in both rights and chemistry. Hence, it is important, exact to understand how some of the most frequent sentences are used. For example, opre employment screening Ó is used, around a test programme find during Ò screening testo is used, around a temporary and as a rule less costly method which find confirmed by a later and as a rule of expensive method.
Observation
The observation of the urine, how it to really grasped data is necessary to do justice Chain of Custody to claims. Without observation one cannot be sure not to provide the urine with a wrong-negative, or that it was really manipulated the urine of the concerning person. Till recently collection observes became except in the penal administration of justice only seldom on. If direct observation in the job was used, there was a loud scream given. The people feel humiliated and degrades by the process. Indirect observation procedure can be used, together with other precautions, like user clothes, washing of the hands of the subject and measurement of the temperature of the test.
Drug uric analysis
Drogen-Urin-Screening is analytic tools for the proof of drugs and their Metaboliten in the urine. The technology for the uric analysis varies and can be formed in such a way to fulfil the specific needs of the single customers. A bigger restriction of pass urine drug test is her lack of specificity, unless, a GC / MS is used. Uric tests are to be recognised less in the situation if the drug was made as blood tests. There are substantial individual differences in the recognition sometimes called away. Diet, Urin-flow, and dose dependence can change the test results. Some people the test positively with lower tins than others, for example.
Direct observation:
Collection The compulsory national directives permit the immediate second collection under the direct observation if the temperature of the test beyond the allowed temperature area and the donators either refuses to measure with it the collectors, his or her body temperature or the donator's body temperature does not explain the test temperature. The collector can also ask, the second test under direct observation, if the collector of the view that to the donator or falsified substituted the test put. This can appear if it Dyeing blue colour in the test if the collector hears or smells something unusual, while the donator of the test provides or if the collector sees a falsification materials on the ground. The direct observation with previous announcement is also allowed if the test provided from the donator on a former drug test had to be diluted by the lab been announced, falsifies or the test it was not carried out because the test was found out for the check and assessment of the Medical Officer unsuitably (MRO) that no medical explanation gives it for inexpedient preparation.
Dedicated bathroom
Own bathroom is a solution for the problem observation. This is cut off a bath with all water supply, so that urine cannot be diluted. Before the entrance, sheets of the person, they the test behind coats, pockets and other evident hiding places for Ò clean Ó tests or thinners. Such precautions raise the likelyhood that the test cannot be changed. Indeed, the person can carry one more Kolostomie bag with drug urine or fade out contaminating materials, under the fingernails. A test can be recognised substituted by the measurement of the temperature, unless, with body temperature is given. Most pollutions can be proved if they are suspected. But to cross carefully to planned attempts, around the special bath he can succeed.
Shy Bladder
Now and then a donator does not become in the situation to make a test because he or they either recently urinates or a "shy" bubble. Generally the concept refers to a person, which not to produce in the situation, a sufficient test either by request, or if somebody nearby during the tried Wasserlassen. The collector is obliged to hold recordings about every tried Wasserlassen. The donator receives large amounts of liquids, as for example 8 ounces all 30 minutes up to 24 grammes and 2 hours. Donators, a pattern cannot as the refusal of a test be announced to give.
Chain of Custody
Chain of Custody is a monitoring procedure for the prevention of manipulations of the test or the results. Chain of Custody begins with the collection of the urine, and lasts up to the Reporting of the test results to customer. The sealing of test container, transport and control technology of tests, the entrance of the tests by the lab and the supervision of lab tests furthermore strict discipline in the Chain of Custody. Authorised signatures become necessary with every step. Lab results can be contested efficiently in court if these are weak spots in the chain. Norms regulate the treatment, analysis and withdrawal of tests if they intended, in a court are allowed. Transfer of urine, blood or saliva from provisory the container must be testified. For example if a person is taken to a doctor for a blood test, the doctor becomes the first limb in the chain of the right of custody. Only few doctors the understanding of the legal frame Chain of Custody procedures. Untill differently instructed, she will follow as a rule Clinical Laboratory standards which will not stand, to which to itself an expert lawyer challenge. The person, the elevation of the blood test has to go in the situation to state procedure about the collection. Also the collector of the test must be able, around the exactness of the container label, including subject Õ see names and other information, like date, time of the collection testify, and the kind of the rallying containers. The chain of the right of custody must be maintained, to the test laboratory Ñ and reaches by the confirmation of the first results.
Custody and the control of form
In the course of the time "Chain of Custody forms turned out nightmare because the employers become in different forms. This problem will be used with the rules which the use of an admitted Custody and the control of form (CCF) corrects around mandate to document the elevation of a test at the collective place. The OMB licensing (office of management and budget) CCF is delivered as a rule by the test lab. The OMB-admitted CCF cannot be changed. The uric test Collection manual for Bundes-Workplace drug Testing programmes can be ordered by the Nationwide Clearinghouse for Alcohol and drug information (NCADI) and is in the website NCADI at the possession
Detection Period
The length of the time a drug or Metaboliten in body liquids should be found when the recognition was known time. Detection times vary according to the inhärenten physical and chemical qualities of the drug, the Personos history of the use and qualities like age, gender, body weight and health. For example, the cocaine proof is very short period (from 12 to 48 hours), while marihuana has a longer period recognition, depending on drug application of the history. Casual use of marihuana can be possible between 2 and 7 days later with chronic use recognition can be proved, up to two months after the last use. However, marihuana is able to do a breath of deep power after 12 hours provably. Detection times to big worry for the employers because it points, how long after the consumption of unlawful drugs, that the use can be proved and, hence, like confidently that the employers can become that the employees are tested negatively really freely by drugs at the time of the check. For the employees have, the unlawful drugs, the knowledge of the disclosure spot can be used the difference to be discovered between the middle ones, and the children's slides by. Recognitions consult drug with employees as a rule sometimes tables to determine, how long they have to go from the use to omit, if before a drug test with hopes of test negatives. Of this Katz-und-Maus-Spiel becomes most frequent in pre-Beschäftigungs tests, where an applicant Clean-up for a few weeks before the use for the employment. Metabolite and metabolism after a drug is swallowed, is distributed smoked, squirted, sniffed or in the blood circulation. Because the blood over and over again goes by the liver and other parts of the body, the drug meetings numerous enzyme systems which convert most of the drug in one or several end products as a Metaboliten. Metaboliten travelling in different parts of the body, including urine, blood and hair. How long it lasts, until be the case this, hangs on the metabolism and the duration of the Metaboliten provably remain in the system becomes as a proof time.
Sensitivity and specificity
Test delicacy is a measure of the tiny amount of the drug which can be ascertained in the uric test. Specificity of a test is his ability to distinguish a drug from another. The sensitivity of the Screening test is in suitable manner for the aims of the check are fixed.
Cut out of vision level and proof border
Cut out of vision level and proof border are two factors, a Testos delicacy. Cut out of vision level refers to the concentration of a drug are necessary to book a positive reading about the tests. Proof border of the test is the concentration below which a certain drug becomes by the procedure not provable. As a rule the first test is given for a wide Screening and is inexpensive. The EMIT belong to it, TLC, RIA or they are relatively sensitive, and most drugs or their Metaboliten are able in the system to recognise. They spend one, positive or negative result. If it a positive, it should be confirmed by another test. The most plausible confirmation GC / MS which is clearly expensive. The confirmation test should be used more specific in her results. There are amount discounts on a big number of similar tests from the same account. On the other side, particularly develops tests which correspond after strict norms, is much more expensive.
False positive and False of negative
Clerical and lab mistake can be made everywhere in the process by the production, identification of the test, the reporting about the results. "False positive Ó means that a test free of drug was announced positively on drugs. OFalse negative Ó means, that a test with drugs as a drug reported free of charge. OFalse positive Ó should not be used loose, around a wrong or delusive result mean. For example, it is not a positive result for amphetamines or opiates because of in the counter or verschreibungspflichtige drugs a wrongly positive result if, indeed, these over the counters drugs were used.
Confirmation of the positive one
All results announced to positive uric tests had to do analysed the second spot by another test method. Both check is a positive result before a positive report will give. This process becomes as a confirmation.
The collector
The obliging guidelines define a collective place as a person who instructs and supports people at a collective place and who receives and the first check of the uric test is made available by these people. The collectors, to a doctor, must not receive special education for the elevation from uric tests. If a collection is necessary, around under direct observation are carried out, the collector of the same gender must become as a donator.
Site Collection
The concept Collective place refers to the whole arrangement, in the uric test which collect the break space or WC state area and field of work by the collector used enclosed. The website has to do the access to only authorised people and collection auxiliary materials and fuels. The collector must make sure, that the donator not about the access to products, like soap, disinfectant, products of the personal hygiene and waters which could be used to falsify or more watered the test. Unnoticed to prohibit entrance and exit of the website. The website has to go for the sure use and storage of tests from the collection to permit, until to the dispatch to the test lab. In preparation of the location, a water supply have to be available are controlled to prevent the donators of thinner of the test. Whenever possibly Dyeing blue or another colour Agent must be added a water supply at the possession of the donator.
Donator's identification system
The donator must be identified positively like single for a check well-chosen. Of satisfactory methods of the identification a photo identity card with driving licence, identity card and employee a positive identification of the employer's representative or other identification under job of the employer's test programme permits. Identification of an employee or another donator is not satisfactory. Non photo to identity cards, like the social security map, credit card, Pay vouchers, or the registration of the electoral maps are not accepted.
Fatally Flaws
The following mistakes or omissions in the documentation to a test are as fatal mistakes which is rejected to itself in a test to the check by the lab.
His mistake is able to do other mistakes or omissions fatally if the information can be used and / or by the collector to the lab in written form provided.
Medical Review Officer
An essential part the drug test programme is the final examination of the results. A positive lab test result not automatically to identify an employee of the applicants as an unlawful drug user. A person with a detailed knowledge about possible alternative medical explanations is essential for the examination of the results. The Medical Review Officer (MRO) fulfils this function by an examination of the results with the givers and the protection of the confidentiality of medical information of the donator. The MRO becomes as an important safety measure in the Federal a drug Testing progrief. The function of the MRO is described in the Medical Review Officer manual for Bundes-Workplace drug Testing progrief by the Substance Abuse and Mentally Health service administration (SAMHSA) prepared.
About Drug Testing.
