Iodine, 24-Hour Urine

Test Code

16602

Alias/See Also

LAB00343

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

Other Acceptable Specimens

10 mL of an unpreserved 24-hour urine, submitted in an acid-washed, metal-free container

Instructions

Specify the total 24-hour urine volume on the request form

Transport Container

Sterile leak-proof container

Transport Temperature

Room temperature

Specimen Stability

Room temperature: 10 days
Refrigerated: 10 days
Frozen: Unacceptable

Methodology
Inductively Coupled Plasma/Mass Spectrometry (ICP/MS)

FDA Status
This test was developed and its analytical performance characteristics have been determined by Quest Diagnostics. It has not been cleared or approved by FDA. This assay has been validated pursuant to the CLIA regulations and is used for clinical purposes.

Setup Schedule

Tues-sat

Reference Range

70-500 mcg/24 h

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.

Performing Laboratory

Quest Diagnostics Nichols Institute-Chantilly VA

14225 Newbrook Drive

Chantilly, VA 20151-2228

The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.