Iodine, 24-Hour Urine

Casandra

Casandra Test Code LC95954Version 1 (DRAFT)

Performing Lab

Lab LabcorpLab Test ID 070222CPT Code 83789

Iodine, 24-Hour Urine

Clinical Use

Use

Monitor exposure to iodine; evaluate for iodine deficiency disorders (IDDs), excessive iodine intake, or iodine in the workplace

Special Instructions

Not provided.

Limitations

Urine iodine levels can be influenced by dietary intake and iodine in medications or supplements. Caution should be exercised when interpreting results, taking into account possible variations due to non-clinical factors.

Test Details

Methodology

Mass Spectrometry

Biomarkers

Iodine

Analyte

Iodine concentration

Concentration / Level • Quantitative (Continuous) (e.g., copies/mL, % expression)

LOINC Codes

Order Codes

2492-7 - Iodine 24h Ur-mRate

Result Codes

2492-7 - Iodine 24h Ur-mRate
2495-0 - Iodine Ur-mCnc

Result Turnaround Time

3-5 days

Specimen

Urine

Volume

5 mL

Minimum Volume

2 mL

Container

Plastic urine container, no preservative

Collection Instructions

Instruct the patient to void at 8 AM and discard the specimen. Then collect all urine including the final specimen voided at the end of the 24-hour collection period (ie, 8 AM the next morning). Screw the lid on securely. Transport the specimen promptly to the laboratory. Container must be labeled with the patient's full name, room number, the date and time collection started, and the date and time collection finished. Do not use preservative.