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In general, the detection time is longest in hair, followed by urine and oral fluid. Drugs in hair may be detectable for approximately 90 days, whereas drugs in urine are generally detectable for one to seven days or longer in chronic users and in oral fluid from five to 48 hours.

In child custody cases, the most common drug test is a urine drug screen. This type of drug test can detect recent use of alcohol, marijuana, cocaine, opiates, amphetamines, and PCP. However, the judge could also order hair follicle or nail clipping tests which can detect drug use over a longer period of time.

Can you refuse a hair follicle drug test? While it is technically possible to refuse a hair follicle drug test, employers and other organizations can refuse employment or other opportunities if a test is not taken. It is important to note that refusing a test may be viewed as an admission of drug use.

Detecting Drug Use The presence of drugs in the human system can be detected by testing a variety of different samples, most notably urine, blood, hair, sweat, and saliva. Urine test- ing is the most cost effective, reliable, and widely used test.

You may conduct a free online search of the USPTO database at the Public Search Facility (Madison East, 1st Floor; 600 Dulany Street, Alexandria, Virginia) between a.m. and p.m. USPTO personnel may not conduct trademark searches for the public. Private trademark search firms will conduct searches for a fee.

The Trademark Electronic Search System (TESS) contains the records of all active and inactive trademark registrations and applications. You can search this database for any applied-for or registered trademarks to see if any are conflicting with your trademark.