Measures iodine in blood (serum or plasma). Iodine is an essential trace mineral required for thyroid hormone synthesis (T4 and T3).
$58.99
Start testing your BiomarkersIodine is a critical micronutrient for thyroid hormone production. Serum or plasma iodine reflects recent intake and circulating iodine levels. Deficiency can contribute to hypothyroidism, goiter, and developmental concerns; excess can also disrupt thyroid function. Use alongside thyroid markers (TSH, T4, T3) for a more complete picture.
Recent intake (within days) can shift iodine levels; results reflect short-term status more than long-term reserves. Iodine-containing contrast agents, kelp supplements, and amiodarone can significantly elevate results. Interpret alongside TSH, Free T4, and clinical context.
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Fast booking, smooth process, and detailed results.
— Olivia Revan
Caught an issue early. I'm thankful I didn't wait.
— Denny Danaid
The results were so detailed and easy to understand.
— Sarah Mitchell
Great service! Found important health markers I didn't know about.
— Michael Chen
Quick turnaround and very professional. Highly recommend!
— Emma Johnson
Fast booking, smooth process, and detailed results.
— Olivia Revan
Caught an issue early. I'm thankful I didn't wait.
— Denny Danaid
The results were so detailed and easy to understand.
— Sarah Mitchell
Great service! Found important health markers I didn't know about.
— Michael Chen
Quick turnaround and very professional. Highly recommend!
— Emma Johnson
Measures iodine in blood (serum or plasma). Iodine is an essential trace mineral required for thyroid hormone synthesis (T4 and T3).
Iodine is a critical micronutrient for thyroid hormone production. Serum or plasma iodine reflects recent intake and circulating iodine levels. Deficiency can contribute to hypothyroidism, goiter, and developmental concerns; excess can also disrupt thyroid function. Use alongside thyroid markers (TSH, T4, T3) for a more complete picture.
The Iodine, Serum/Plasma is available as an add-on for $59 through Vitals Vault. You can add it to any core panel (Essential $99, Advanced $199, or Max $399) during checkout. All tests are processed at CLIA-certified Quest Diagnostics locations.