Test ID: IGFMS    
Insulin-Like Growth Factor-1, Mass Spectrometry, Serum

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

Stable isotope labeled internal standard is added to patient samples. Insulin-like growth factor 1 (IGF-1) is then extracted by selective precipitation. The extracted samples are analyzed by liquid chromatography-mass spectrometry (LC/MS). This is a Laboratory-developed mass spectrometry test, calibrated against the 1st WHO International standard for IGF-1 (02/254).(Unpublished Mayo method)

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


Day(s) Performed Outlines the days the test is performed. This field reflects the day that the sample must be in the testing laboratory to begin the testing process and includes any specimen preparation and processing time before the test is performed. Some tests are listed as continuously performed, which means that assays are performed multiple times during the day.

Monday through Friday, Sunday

Report Available The interval of time (receipt of sample at Mayo Clinic Laboratories to results available) taking into account standard setup days and weekends. The first day is the time that it typically takes for a result to be available. The last day is the time it might take, accounting for any necessary repeated testing.

2 to 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 Indicates the location of the laboratory that performs the test