Test ID: TLCU
Immunoglobulin Total Light Chains, Urine
Method Description 
Describes how the test is performed and provides a method-specific reference
The assay is performed by immunonephelometry. Specific antisera are mixed with patient samples, and the mixture is subjected to a beam of light before and after formation of antigen-antibody complexes. The change in light scatter after complex formation is proportional to the antigen (light chain) concentration.(Siemens Nephelometer II Operations Instruction Manual, 1999)
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.
Monday through Saturday; Continuously until 3 p.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.
Same day/1 day
Maximum Laboratory Time Defines the maximum time from specimen receipt at Mayo Medical Laboratories until the release of the test result
3 days
Specimen Retention Time Outlines the length of time after testing that a specimen is kept in the laboratory before it is discarded
7 days
Performing Laboratory Location The location of the laboratory that performs the test
Rochester
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