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Iodine, 24-Hour Urine
Test Code16602
CPT Codes
82542
Includes
CPT code 81050 may be added at an additional charge for volume measurement
Preferred Specimen
10 mL aliquot of well-mixed 24-hour urine - no preservative
Minimum Volume
2 mL
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 as essential element that is required for thyroid hormone production. The measurement of urinary iodine serves as an index of adequate intake.