Blind Sample definition
Examples of Blind Sample in a sentence
Blind Sample: A urine specimen submitted to a laboratory for quality control testing purposes, with a fictitious identifier, so that the laboratory cannot distinguish it from employee specimens, and which is spiked with known quantities of specific drugs or which is blank, containing no drugs.
In addition, analytical performance at the NWQL is continually and independently tracked through the USGS Branch of Quality Systems (BQS) Blind Sample Programs.
Blind Sample or Blind Performance Test Specimen - A urine specimen submitted to a laboratory for quality control testing purposes, with a fictitious identifier, so the laboratory cannot distinguish it from employee specimens, and which is spiked with known quantities of specific drugs or which is a blank, containing no drugs.