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Test Catalog

Test ID: IGF1I    
Insulin-Like Growth Factor 1, Serum

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

Testing is performed using the IDS iSYS instrument. The IDS-iSYS Insulin Like Growth Factor-1 is a sandwich, chemiluminescent assay. Samples are incubated with an acidic solution to dissociate IGF-I from the binding proteins. A portion of this, along with a neutralization buffer, a biotinylated anti-IGF-I monoclonal antibody, and an acridinium labeled anti-IGF-I monoclonal antibody are incubated. Streptavidin labeled magnetic particles are then added and following an additional incubation step, the magnetic particles are captured using a magnet. After a washing step and addition of trigger reagents, the light emitted by the acridinium label is directly proportional to the concentration of IGF-I in the original sample.(Instruction manual: Immunodiagnostic Systems Inc. Scottsdale, AZ, IS-3900PLv02, 10/19/2011)

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.

Monday through Friday; 5 a.m.-12a.m., Saturday; 6 a.m.-6 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

3 months

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