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Test Directory

Iodine, 24-Hour Urine

Test Summary

Iodine is as essential element that is required for thyroid hormone production. The measurement of urinary iodine serves as an index of adequate intake.

Aliases

  • N/A

Specimen Collection

Special Instructions

N/A

Preferred Specimen

10 mL urine aliquot of a 24-hour urine submitted in a sterile leak-proof urine container - no preservative

Minimum Volume

2 mL

Instructions

Collect 24-hour urine without preservatives.

Patient Preparation

N/A

Storage

N/A

Transport Temperature

Room temperature

Specimen Stability

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

Limitations

N/A

Other Acceptable Specimens

Unpreserved 24-hour urine submitted in an acid-washed metal-free container

Unacceptable Specimens

N/A

Order Code

IODN24

EPIC (Premier) Code

LAB5501

Includes

CPT code 81050 may be added at an additional charge for volume measurement

CPT Code

  • 82542

Billing Code

  • 670110

CPT Statement

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 the U.S. Food and Drug Administration. The FDA has determined that such clearance or approval is not necessary. This assay has been validated pursuant to the CLIA regulations and is used for clinical purposes.

Physician Attestation of Informed Consent

N/A

Testing Laboratory

Quest Diagnostics Nichols Institute
14225 Newbrook Drive
Chantilly VA, 20153

Department

Reference Testing

Reference Range

70-500 mcg/24 h

Setup Schedule / Expected Turnaround Time

Tuesday - Saturday; Report available: Same day

Specimen Collection

Special Instructions

N/A

Preferred Specimen

10 mL urine aliquot of a 24-hour urine submitted in a sterile leak-proof urine container - no preservative

Minimum Volume

2 mL

Instructions

Collect 24-hour urine without preservatives.

Patient Preparation

N/A

Storage

N/A

Transport Temperature

Room temperature

Specimen Stability

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

Limitations

N/A

Other Acceptable Specimens

Unpreserved 24-hour urine submitted in an acid-washed metal-free container

Unacceptable Specimens

N/A

Billing

CPT Code

  • 82542

Billing Code

  • 670110

CPT Statement

Result Information

Methodology

Inductively Coupled Plasma-Mass Spectrometry (ICP-MS)

Testing Laboratory

N/A

Reference Range

70-500 mcg/24 h

Setup Schedule / Expected Turnaround Time

Tuesday - Saturday; Report available: Same day