Test Catalog

Test ID: ASFR    
Arsenic Fractionation, 24 Hour, Urine

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

Inorganic (AsIII, AsV), organic (arsenobetaine, arsenocholine), and methylated (monomethylarsonic acid, dimethylarsinic acid) arsenic species in urine are separated using ion chromatography (IC) and quantitated by inductively coupled plasma-mass spectrometry (ICP-MS) in kinetic energy discrimination sensitive (KEDS) mode using an internal standard and a mobile phase matrix calibration.(Nixon DE, Moyer TP: Routine clinical determination of lead, arsenic, cadmium, and thallium in urine and whole blood by inductively coupled plasma mass spectrometry. Spectrochimica Acta B 1996;51:13-25; Sen I, ZOU W, Alvaran J, et al: Development and validation of a simple and robust method for arsenic speciation in human urine using HPLC/ICP-MS. J AOAC Int 2015;98[2]:517-523; Hata A, Endo Y, Nakajima Y, et al: HPLC-ICP-MS speciation analysis of arsenic in urine of Japanese subjects without occupational exposure. J Occup Health 2007;49[3]:217-223; Yoshimura Y, Endo Y, Shimoda Y, et al: Acute arsine poisoning confirmed by speciation analysis of arsenic compounds in the plasma and urine by HPLC-ICP-MS. J Occup Health 2011;53[1]:45-49)

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; 8 a.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.

2 days

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

4 days

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

14 days

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