Iodide
Test Mnemonic
BIODIN
CPT Codes
- 83789 - QTY (1)
- 83018 - QTY (1)
LOINC ®
2494-3
Aliases
- Iodine
Performing Laboratory
Mayo Clinic Dpt of Lab Med & Pathology
Specimen Requirements
| Volume | Type | Container | Collect Temperature | Transport Temperature | Special Instructions |
|---|---|---|---|---|---|
| 1 mL | Serum | No additive (Navy Blue) | Refrigerated | Do not use betadine during venipuncture. Patient should have no gadolinium- or iodine-containing contrast media administered in the previous 96 hours. Allow specimen to clot for 30 minutes then pour serum into metal-free, screw-capped, polypropylene vial. |
Minimum Specimen Requirements
| Volume | Type | Container | Collect Temperature | Transport Temperature | Special Instructions |
|---|---|---|---|---|---|
| 0.3 mL |
Stability
| Environmental Condition | Description |
|---|---|
| Ambient | 21 days |
| Refrigerated | 21 days |
| Frozen | 21 days |
Days Performed
Tue, Fri
Turnaround Time
2 - 5 days
Methodology
| Name | Description |
|---|---|
| Inductively Coupled Plasma / Mass Spectrometry (ICP-MS) |
Reference Range
| Iodide | |||||
|---|---|---|---|---|---|
| Sex | Age From | Age To | Type | Range | Range Unit |
| 40 - 92 ng/mL |
Special Info
Allow specimen to clot for 30 minutes then centrifuge. Carefully pour serum into metal-free, polypropylene vial, avoiding transfer of the cellular components of blood. Do not insert a pipet into the serum to accomplish transfer, and do not ream the specimen with a wooden stick to assist with serum transfer. High concentrations of gadolinium and iodine are known to interfere with most metals tests. If gadolinium-containing or iodine-containing contrast media have been administered, a specimen cannot be collected for 96 hours.
Clinical Info
This test is useful for determination of iodine overload and monitoring iodine levels in individuals taking iodine-containing drugs. Values between 80 ng/mL and 250 ng/mL have been reported to indicate hyperthyroidism. Values > 250 ng/mL may indicate iodine overload.