"There are two common ways that users attempt to “cheat” a urine drug test: modify their urine sample with chemicals or drink large amounts of water prior to testing in order to dilute their sample."
What if I have questions about my results? Our full-time toxicologists and chief medical officer are always willing to assist you with the interpretation of results. Simply call Client Services at 888-392-6042. One of our representatives will connect you with an available expert. You may also e-mail questions to toxicologist@completetox.com. When reviewing a lab report, what does "Canceled: due to interference" mean? Interference is an unknown signal that prevents accurate identification of drugs during the confirmation analysis. Its origin cannot be determined, but it may be an endogenous compound (a naturally occurring compound within the body), a prescription medication, or something added to the specimen after collection. In instances where a definite positive or negative result cannot be determined for a drug, the test is conducted a second time. After the second attempt, if the drug in question still cannot be accurately determined, the test for that drug is canceled. What does a negative result mean? Did the donor have anything present in their sample at all? A negative result does not necessarily mean there is zero trace of a drug in a given sample. Rather, it indicates that the drug was not detected above the pre-determined cut-off concentration. For example, a cut-off of 300 ng/mL for benzodiazepines means that the combined total of cross-reacting benzodiazepines in the specimen must be above 300 ng/mL to register on the test and produce a positive result. Specimens that contain a combined total benzodiazepine concentration of fewer than 300 ng/mL will register on the test as negative.Therefore, in some cases, low concentrations may be present, but a negative result shows up on the report and is still considered to be an accurate test result.
How do urine alcohol levels compare to blood alcohol levels? Ethanol (drinking alcohol) may be detected in blood and urine after consumption of alcoholic beverages. Blood and urine ethanol concentrations may be very different, depending on the time between ethanol consumption and specimen collection and frequency of urination.The ethanol concentration will often be higher in urine than in blood. In some cases, urine ethanol may be highly positive and the blood completely negative.Therefore, urine ethanol cannot be used to estimate a blood ethanol concentration. Is there anything that can be used to "cheat" a urine test? There are two common ways that users attempt to “cheat” a urine drug test: modify their urine sample with chemicals or drink large amounts of water prior to testing in order to dilute their sample. Many products are available on the Internet claiming to enable a person to produce a negative test result after drug use if that product is added to a urine sample. Most of these products contain strong chemicals known as oxidants, which are capable of modifying the chemical structure of a drug. Complete Toxicology Laboratories (Clinical Connect) tests every urine sam- ple for the presence of oxidants to identify potential adulteration. How do I deal with marijuana? This a complex issue. Marijuana is currently classified as a Schedule 1 drug by the DEA. For that reason, many providers will not prescribe opioids to patients using cannabis. Other providers reference State ‘Medical Marijuana Use’ laws and feel comfortable prescribing opioids to cannabis users. Some providers adopt a “don’t ask, don’t tell” policy, and request the lab to remove marijuana from the UDT so that positive results are not seen. Do your homework and create an office policy.Then disclose this policy to your patients.
29
Made with FlippingBook - Online Brochure Maker