Test Catalog

Test ID: FGF23    
Fibroblast Growth Factor 23, Plasma

Method Description Describes how the test is performed and provides a method-specific reference

The Human FGF-23 (C-Term) 2nd Generation ELISA kit is a two-site enzyme-linked immunosorbent assay (ELISA) for the measurement of fibroblast growth factor 23 (FGF23) . Two affinity purified goat polyclonal antibodies detect epitopes within the carboxyl-terminal (c-terminal) portion of FGF23. The sample is incubated simultaneously with both antibodies in a streptavidin coated microtiter well. The immobilized sandwich complex is then incubated with HRP-Avidin. The enzymatic activity of the antibody complex bound to the well is directly proportional to the amount of FGF23 in the sample.(Package Insert: Immunotopics Human FGF-23 (C-Term) ELISA Kit, Quidel Corporation. 2015)

PDF Report Indicates whether the report includes an additional document with charts, images or other enriched information


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.


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.

1 day

Maximum Laboratory Time Defines the maximum time from specimen receipt at Mayo Clinic Laboratories until the release of the test result

8 days

Specimen Retention Time Outlines the length of time after testing that a specimen is kept in the laboratory before it is discarded

3 months

Performing Laboratory Location Indicates the location of the laboratory that performs the test