This is one excuse that is used frequently for positive results in drug test kits. In reality the tests are designed to exclude false positives by any other type of substance. Vitamins, Tylenol, Aspirin, coffee, tea, soda, poppy seeds on a bagel and even antibiotics will not cause a false positive reading with any type of home use or commercial drug test kits. It is also important to keep in mind that simple being around a drug or handling a drug will not provide enough of a concentration in the blood to trigger a positive reading on drug test kits. Simply being around someone smoking marijuana or handling a bag full of narcotics will not result in a positive test. Codeine, on the other hand, may cause a positive test result for opiates. In some cases prescription pain medication can trigger this response but so can some cough suppressant products that contain codeine. Knowing what, if any, cold or prescription medications an individual is taking at the time of the test can help in determining if a full lab test may be required. Are there drug test kits that test for Rohypnol? Rohypnol, also known as the date rape drug, can be tested for with many drug test kits, as long as they are indicated for benzodiazepines. The biggest issue with testing for Rohypnol as opposed to other drugs in this class is that it typically only stays in the body about 8 hours, which means there is little time after being given the drug to actually test with any accuracy. If the individual is on any prescription benzodiazepines, often prescribed for depression, this can make isolation of Rohypnol impossible with drug test kits. Full laboratory testing through a doctor or clinic can be more specific; however the short time span the drug is in the individuals system still poses the greatest problem. How expensive are drug test kits? Considering the cost of not detecting the use of drugs and seeking help, the cost of drug testing kits is incredibly low and reasonable. Most kits, both urine and saliva, will cost less than ten dollars per unit and some are less than that, depending on the number of panels and the types of drugs tested for. With an increasing demand by private and public companies, agencies and organizations drug test kits are becoming much more accessible and low cost. They are not only effective in determining drug use at the home or workplace but they also have been proven to decrease the overall abuse of substances. The concern of kids, employees and others in the company of being subjected to a random drug test has really affected the rampant abuse of illegal and prescription medications within the workforce. Future increased use of drug testing will only further enhance this trend and set clear expectations for employees and family members to follow.

This is one of the oldest myths about saliva oral drug test kits and processes. In fact mouthwash immediately before a saliva oral drug test kit could invalidate the reading, however since you have to wait for 5 minutes before testing this is not an issue. It is essential that nothing be ingested or eaten by the individual to be tested for a minimum of five minutes before administering the test. This includes gum, lozenges, cigarettes, chewing tobacco, or any type of liquids including water, coffee or soda. Will a saliva oral drug test be accurate for all types of drugs? A saliva oral drug test is just like a urine drug test in that they are designed to test for a specific spectrum of drugs. There are some single drug test kits and some that test for more than one drug. Since any drug test only tests for specific drugs, it is important to know what drug your want to test for. Many home users such as parents or guardians as well as businesses prefer to use the six panel test that will include readings for marijuana, cocaine, PCP, methamphetamines, amphetamines and opiates. Like a urine drug test the saliva oral drug test may also detect prescription medications that fall into some of these categories. For example, if the individual tested was on some type of prescription amphetamine, such as some ADHD medications, the test would indicate positive. It is important to know what prescription medications the subject may be taking and check to make sure they won't cause a positive result that may lead to misunderstanding the test results. Do saliva oral drug test kits need to be kept refrigerated? Saliva oral drug test kits or strips come in pre-packaged sealed foil type pouches that do not need to be kept refrigerated. This means that they can easily be taken to any testing area without any concerns for managing and maintaining a specific temperature. All test also have a control line that will appear, usually at the top of the results window. If the control line does not appear on the test the results should be ignored and the test completed again. The control line should always appear on every test to indicate that the test has not been damaged or invalidated. Do I have to have special training to administer a saliva oral drug test? No, there is no specific training required to administer a saliva oral drug test. Most businesses, companies or agencies tend to use someone that is certified only in the event that someone may challenge the test in a court of law. As long as the test are CLIA waived, which means they have been approved for use of the general public, there is no requirement for specific types of training and they are approved for use and considered valid and reliable as long as the instructions are correctly followed.

This question is rather challenging to answer with a concrete number since there are many factors that can influence how long a specific drug will test positive in someone's system. Cocaine tests measure a metabolite known as benzoylecgonine, which is a by-product of the metabolism of cocaine in the human body. This metabolite goes to the fat cells, and then is released as the body burns the fat cells for energy. The benzoylecgonine released in the urine reacts with the cocaine drug test, providing a positive reading.

Most individuals will test positive for cocaine use 2 to 4 days after using. However, different individuals may test positive for up to 14 days and in chronic heavy users some benzoylecgonine can be detected in the urine for up to 22 days. Individuals that use other prescription or illegal drugs may have different times for testing positive for cocaine or the other drug or substance. Most cocaine drug test kits test for levels of benzoylecgonine at 300 nanograms per milliliter, which is the standard recognized by the National Institute of Drug Abuse, Substance Abuse and Mental Health Services Administration as the baseline reading for positive. Can a cocaine drug test tell you how long ago the drug was consumed or in what form? It is important to know that cocaine may be ingested or used in many different forms and even combined with other illegal or prescription drugs. While a cocaine drug test will let you know if cocaine has been consumed in the last 24-48 hours through the presence of benzoylecgonine in the urine or saliva, there is no way to know how it was taken. Likewise the cocaine drug test cannot tell you exactly when the drug was used, but you can narrow down the timeframe somewhat. In order to show at the 300ng/ml rate on most tests the drug must have been consumed prior to 48 hours before the test. This may not be true for chronic users or for someone that used more than a typical dosage of cocaine regardless of how many times they had used in advance. Combining cocaine with other drugs may slightly change the timeframe but typically not significantly. Can a cocaine drug test give a false reading? Like any type of substance testing, approximately 98-99% of the time the test will be 100% accurate. In some rare cases, generally because of tester error, the test may be inaccurate. In these situations retesting at the next possible opportunity or using a saliva test instead of a urine test or vice versa can often verify the result or signal that a full lab test needs to be completed. Often the greatest cause of errors in reading a cocaine drug test occurs from waiting too long to read the test or reading the test too soon. It is essential that anyone using a cocaine drug test read and follow all the manufacturers instructions, including correctly timing the test prior to reading the results.

If the test is administered correctly and within a specific time frame after ingesting or consuming a specific drug, it is almost 100 % accurate. Different tests offer different ranges but most report over 99% accuracy. Of course there are ways that the individual being tested can attempt to trick or negate the results of a drug test, which is not a fault of the test. Using an at home drug test that has an adulteration component or test will help ensure that the sample has not been tampered with or the individual has not taken one of the many "cleanse or cleaning" supplements available. Can someone be on drugs but pass an at home drug test? At home drug tests are not comprehensive for every drug that an individual may take. For example, not all prescription drugs will show on at home drug tests, especially if the test administered is only for marijuana and cocaine. Street drugs may also not show if the incorrect test is used. It is essential if parents or professionals are using an at home drug test to have an idea of what drug they should be testing for. Often many parents or even professionals working with children already have an idea of what drugs are likely to be problematic. For people that are working with children or adults that are suspected of drug use, learning the signs and symptoms of various drugs can be extremely helpful. Watching the individual's behavior, physical changes, mental functioning as well as social behavior can really assist in narrowing down the general type of drug that you may want to test for. Can a test give a false positive or a false negative? If the test is administered incorrectly or if the urine, saliva or breath was tampered with in some way then a false negative could occur. In all tests there is a baseline measurement or lower limit of sensitivity to the specific drug. If the at home drug test is given outside of the time that the drug stays at detectable levels in the body then the test will show negative, even though the individual had used that particular drug. Testing within 2 days of most types of suspected use is the best option to avoid this problem. Testing too soon before the body metabolizes the drug can also give a negative reading so that timeframe is important. There are charts provided within at home drug test kits to help testers know the timeframes to watch. False positives can rarely occur however generally it is because the child or individual is on some type of prescribed medication that cannot be distinguished from a drug you are testing for. Many ADHD medications will show as amphetamines and many anti-depressants will often show as benzodiazepine positive. If your child or the adult you are testing is on a prescription for these groups or types of drugs, consult with your doctor before using an at home drug test.