The sample or @S06071@(s) sent to or received by the laboratory. When the laboratory sample is further prepared (reduced) by subdividing, mixing, grinding or by combinations of these operations, the result is the @T06285@. When no preparation of the laboratory sample is required, the laboratory sample is the @T06285@. A @T06284@ is removed from the @T06285@ for the performance of the test or for analysis. The laboratory sample is the final sample from the point of view of sample @C01148@ but it is the initial sample from the point of view of the laboratory. Several laboratory samples may be prepared and sent to different laboratories or to the same laboratory for different purposes. When sent to the same laboratory, the set is generally considered as a single laboratory sample and is documented as a single sample.