C2 Complement, Antigen, Serum
Method Description Describes how the test is performed and provides a method-specific reference
C2 antigen is measured by radial immunodiffusion (RID). Antiserum to C2 is embedded in a layer of agarose, wells are punched into the agarose gel, and the patient specimens and standards are allowed to diffuse into the gel and form a precipitin ring. The diameter of the ring is proportional to the antigen (C2) concentration. The RID reagent set is from The Binding Site Ltd. (Mancini G, Carbonara AO, Heremans JF: Immunochemical quantitation of antigens by single radial immunodiffusion. Immunochemistry, 1965;2:235)
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.
Wednesday, Friday; 1 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.
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