Method Description Describes how the test is performed and provides a method-specific reference
Manganese (Mn) is analyzed using an inductively coupled plasma-mass spectrometer with universal cell technology (UCT) operated in dynamic reaction cell (DRC) mode. Aqueous acidic calibrating standards, reagent blanks, quality control specimen, and patient specimens are diluted with aqueous acidic diluent containing internal standard. In turn, the dilutions are aspirated by a pneumatic high-pressure nebulizer driven by argon gas. The nebulized solutions suspended in the carrier argon gas stream are injected into a high temperature (6800 K) argon gas discharge (plasma). The plasma decomposes, atomizes, and ionizes the nebulized particles. All atoms, molecules, and ions formed in the discharge are extracted via a platinum orifice and enter the quadrapole ion deflector (QID) where only the ions are bent at a 90 angle and pass into a quadrapole with UCT. The quadrapole cell is filled with ammonia (NH3), which chemically reacts with the ion beam to remove polyatomic interferences and focus the beam into a quadrapole mass spectrometer. Mn ions are separated from the remaining concomitants by the quadrapole mass spectrometer allowing only Mn ions to collide with the instrument detector to produce a signal proportional to the bulk concentration of Mn in the sample and calculated by the instrument based upon a ratio with the internal standard gallium.
Day(s) and Time(s) Test Performed Outlines the days and times the test is performed. This field reflects the day and time the sample must be in the testing laboratory to begin the testing process and includes any specimen preparation and processing time required before the test is performed. Some tests are listed as continuously performed, which means assays are performed several times during the day.
Friday; 11 a.m.
Analytic Time Defines the amount of time it takes the laboratory to setup and perform the test. This is defined in number of days. The shortest interval of time expressed is "same day/1 day," which means the results may be available the same day that the sample is received in the testing laboratory. One day means results are available 1 day after the sample is received in the laboratory.
Maximum Laboratory Time Defines the maximum time from specimen receipt at Mayo Medical Laboratories until the release of the test result
Specimen Retention Time Outlines the length of time after testing that a specimen is kept in the laboratory before it is discarded
Performing Laboratory Location The location of the laboratory that performs the test