Iodine 24hr Urine I24

Synonyms

Allscripts (AEHR) Order Name

Iodine 24hr Urine

Sunrise Clinical Manager (SCM) Order Name

Iodine, Urine 24 Hour

Clinical Info

Assessment of iodine toxicity or recent exposure in a 24-hour urine collection
Monitoring iodine excretion rate as index of replacement therapy

Specimen Type

Urine

Container

24hr Ur No Preserv

Collection Instructions

Container/Tube: 24 Hour urine container with no metal cap
Specimen: 10 mL aliquot from 24 Hour or send entire 24 Hr Urine Container
Transport Temperature: Refrigerated
Stability: 146 Days Room Temperature, Refrigerator or Frozen
Patient Preparation:
1. High concentrations of gadolinium and iodine are known to interfere with most metal tests. If gadolinium- or iodine-containing contrast media has been administered, wait a minimum of 96 hours before starting collection.
2. If this test is used in conjunction with the (131)I uptake test, then specimen collection should begin immediately after the dose of (131)I is given (ie, the patient should void and discard urine just prior to the (131)I dose, and all subsequent urine should be collected for the next 24 hours). The last void should be included in the collection.

Transport Instructions

Refrigerated

Specimen Stability

146 Days Room Temperature, Refrigerator or Frozen
Patient Preparation:
1. High concentrations of gadolinium and iodine are known to interfere with most metal tests. If gadolinium- or iodine-containing contrast media has been administered, wait a minimum

Methodology

Inductively Coupled Plasma-Mass Spectrometry (ICP-MS)

Days Performed

TAT: 2-5 Days

Performing Laboratory

Mayo Medical Laboratories

CPT

83789
LOINC Code: 2492-7

PDM

5910810

Result Interpretation

0-17 years: not established

≥18 years: 75-851 mcg/24 hour

Forms