drug test specific gravity
drug test specific gravity
A urine drug test is a process where individuals is a urine sample analyzed for the presence of illegal drugs. As with regular urinalysis, is vital to collect a urine sample midstream. This means that the first flow of urine is discarded, and only the middle part is collected in a sterile container. One or two ounces is sufficient for testing. We recommend cleaning the genital area before collection to ensure the purity of the sample. Conventionally, the first morning sample is more useful.
1. Safety measures
To avoid the change of urine samples from another person, some testing methods call for the material was observed during urination. This is obviously against the civil liberties of the individual though. One way to balance the individual right to privacy and accuracy of test results, some testing facilities require the subject to remove all personal belongings and wear a hospital gown. The collection is After all, is in a room where the subject has no access to water that can be used to dilute the sample.
Some individuals attempt to subvert a urine test by drinking plenty of water. The testing facility, however, can counteract this by rejecting a sample because of its light color accordingly. In the case of acceptance as a sample, mark and may be subject to a specific gravity test. The normal range in the number of the specific gravity of a urine sample is between 1.006 and 1.030 (more indicate a greater concentration). A sample that is too thin may be rejected, the dilution is noted in the report and sent to agency who requested the test. As a rule, no testing facilities in a sample test when the security seal has been damaged.
2. Stages of Drug Testing
As a routine urinalysis, drug testing in urine may contain two distinct phases: (1) physical examination, where color, gravity Specifically, the clarity and concentration was observed, and the chemical test (2), that evidence of specific illegal drugs of interest. A third stage in the urinalysis, however, microscopic examination, which identifies cells, cylinders and other components such as mucous and bacteria.
Methods of analysis include:
– High performance liquid chromatography – analysis Immunoassay – Gas chromatography / mass spectrometry (GC-MS)
GCMS is often seen as a confirmation test, as in the case where the result is challenged when he turns out to be positive. There are some cases where the outcome turns out to be a false positive, in other interfering factors, such as certain types of food and prescription drugs must be taken into account.
3. Home Tests
Another method of sample analysis involves the de-(or site's home) test, which normally consists of a chemical or charge card strips that produces the test result in a very short period of time. These devices can be used for analysis of saliva or sweat. As expected, this type tests are prone to contamination and error. As such these results are difficult to defend in a court of law, unless followed by a laboratory equivalent underlying the test.
In addition, a comprehensive review of drugs in urine (or urine routine, for that matter) requires specialized equipment and technical skills. These starter kits only perform part of the complete chemical tests, which may include urine glucose, urine pH, and ketones in the urine.
Tests of drugs in general has been controversial since its introduction in the twentieth century. Some have argued that constitute violations of the privacy of a person.
Justification its use has been mainly in scenarion labor, especially in two situations: (1) pre-employment procedures, in which an employer wants to minimize the risk of hiring the perspectives of potential drug problems, and (2) after the accident drug testing under certain circumstances may justify the employee tests to determine if he or she was under the influence of drugs at the time of the accident.
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Article Source: ArticlesBase.com – Urine Drug Testing – All The Facts
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