Different labs and tests...look for different drugs. Also some tests (urine, blood, follicle, etc) can detect drug-use from different times in your past. Basically, negative means you dont have evidence of drug use in your system. Source(s): Lab Tech. just now. Report Abuse. A drug test is a technical analysis of a biological specimen-for example urine, hair, blood, sweat, or oral fluid / saliva-to determine the presence or absence of specified parent drugs or their metabolites.
In addition, you may qualify for Medicare if you meet the eligibility requirements for the SSA disability program and youâre a child or widow(er) 50 years or older of someone who has worked long enough as a government employee through which Medicare taxes were paid.
Anyone who is eligible for premium-free Medicare Part A is eligible for Medicare Part B by enrolling and paying a monthly premium. If you are not eligible for premium-free Medicare Part A, you can qualify for Medicare Part B by meeting the following requirements: You must be 65 years or older. You must be a U.S. citizen, or a permanent resident lawfully residing in the U.S for at least five continuous years.