Laboratory control sample definition
Laboratory control sample or “LCS” means a sample of an inert matrix or a matrix with a consistent concentration of the analytes of interest, fortified with a verified known amount of the analytes of interest. The purpose of an LCS is to determine whether the methodology is in control and whether the laboratory is capable of making accurate and precise measurements.
Laboratory control sample or "LCS" means a sample matrix, free from the analytes of interest, spiked with verified known amounts of analytes or a material containing known and verified amounts of analytes. It is generally used to establish intra-laboratory or analyst specific precision and bias or to assess the performance of all or a portion of the measurement system. "Laboratory control sample" or "LCS" may also be named laboratory fortified blank, spiked blank, or QC check sample.
Laboratory control sample. (LCS) means a blank matrix to which known concentrations of each of the target method analytes are added. The spiked concentration must be at a mid-range concentration of the calibration curve for the target analytes. The LCS is analyzed in the same manner as the representative sample.
More Definitions of Laboratory control sample
Laboratory control sample. (LCS) means a blank matrix to which known concentrations of the target method analytes are added. The LCS is analyzed in the same manner as the representative sample.
Laboratory control sample. (LCS) means a blank matrix to which known concentrations of each of the target method analytes are added. The
Laboratory control sample. (LCS) means a blank matrix to which known concentrations of each of the target method analytes are added. The spiked concentration must be within the calibration range of the method. The LCS must be carried through the entire sample preparation process and must be analyzed in the same manner as a representative sample. The LCS must be made from a standard that is not from the same vendor, or from the same lot if only one vendor is available, that is used for the calibration curve.must be at a mid-range concentration of the calibration curve for the target analytes. The LCS is analyzed in the same manner as the representative sample.
Laboratory control sample means a sample of an inert matrix or a matrix with a consistent concentration of the analytes of interest, fortified with a verified known amount of the analytes of interest, generally used to assess the performance of all or part of a measurement system, or to establish intra-laboratory or analyst bias.