IDST - Performance: Alpha-L-Iduronidase, Fibroblasts

Test Catalog

Test Name

Test ID: IDST    
Alpha-L-Iduronidase, Fibroblasts

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

Incubation of 4-methylumbelliferyl alpha-L-iduronide with whole-cell homogenates prepared from cultured skin fibroblasts yields 4-methylumbelliferone, which is fluorometrically measured. The inclusion of inhibitor of glucuronidase is necessary because the iduronide substrate is not 100% pure and contains some 4-methylumbelliferyl glucuronide.(Hopwood JJ, Muller V, Smithson A, Baggett N: A fluorometric assay using 4-methylumbelliferyl alpha-L-iduronide for the estimation of alpha-L-iduronidase activity and the detection of Hurler and Scheie syndromes. Clin Chim Acta 1979;92:257-265)

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.

30-45 days depending on rapidity of growth

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

45 days

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

3 years

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