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Iodine, Serum/Plasma
Test Code16599
CPT Codes
82542
Preferred Specimen
1 mL serum collected in a no additive trace metal-free (dark blue-top) tube
or
1 mL plasma collected in an EDTA trace metal-free (dark blue-top) tube
or
1 mL plasma collected in an EDTA trace metal-free (dark blue-top) tube
Minimum Volume
0.5 mL
Instructions
Separate plasma or serum from cells and pour off into an acid washed vial (AWV) or other trace element free container.
Transport Temperature
Room temperature
Specimen Stability
Room temperature: 10 days
Refrigerated: 10 days
Frozen: Unacceptable
Refrigerated: 10 days
Frozen: Unacceptable
Methodology
Inductively Coupled Plasma/Mass Spectrometry (ICP/MS)
Setup Schedule
Sets up 3 days a week.
Clinical Significance
Iodine is an essential element that is required for thyroid hormone production. The measurement of iodine serves as an index of adequate dietary intake and iodine overload, particularly from iodine-containing drugs such as Amiodarone.