On your lab requisition: Labcorp “Iodine, Serum or Plasma” (test no. 070034)
The short answer
Measures iodine levels — essential for thyroid hormone production and metabolism, measured from a urine sample. At TestWell it costs $39.99 plus a $6 lab processing fee, needs no fasting, and results post in 3–7 business days. Physician-authorized with no doctor's visit or insurance needed; draw at Labcorp.
Hospital Lab
$140
cash pay
Other Labs
$52
+ lab fees
TestWell
$39.99
+ $6 lab processing fee
Iodine is a trace element required for thyroid hormone production. Thyroid hormones regulate metabolism, growth, and development. Iodine deficiency is the most common preventable cause of intellectual disability worldwide and can cause goiter and hypothyroidism. While iodized salt has reduced deficiency in many countries, it remains a concern for those on salt-restricted diets or who avoid processed foods.
Vitamin and nutrient testing identifies deficiencies that can drive fatigue, immune dysfunction, neurological symptoms, and long-term disease risk — and confirms that supplementation is working.
Anyone with restrictive diets (vegan, low-fat, low-carb), malabsorption conditions, fatigue, hair loss, mood changes, or currently supplementing and wanting to verify dosing.
Sample Type
Urine sample
Fasting
Not required
Results In
3–7 business days
Performed At
Labcorp
1 biomarker tested
Your Iodine results will include values for each of the 1 biomarker tested, along with reference ranges. Results are reviewed by a licensed physician before being released to your secure portal.
If any values fall outside the normal range, your report will include guidance on what that may mean and recommended next steps. You'll receive an email notification when your results are ready, typically within 3–7 business days.
Typical reference range layout
Lab reports show where your value sits relative to established reference intervals—your physician interprets this in context for you. Already have results? Analyze them with your AI assistant against our physician-reviewed ranges.
No fasting required. Random urine sample.
An Iodine test costs $39.99 at TestWell — $45.99 all-in when ordered alone, because the $6 lab processing fee is charged once per order, with no draw fee or physician fee added. Ordered directly from the labs' own consumer sites, the same test lists at $52.00 at Quest Health and $69.00 at Labcorp OnDemand (list prices checked Sep 12, 2026). Hospital outpatient labs typically bill around $140.00 self-pay for the same test, and often more. With insurance, what you pay depends on your deductible and your plan's negotiated rate; TestWell's price is fixed before the draw and is HSA/FSA-eligible.
| Where you order | Price | One test, all-in | Notes |
|---|---|---|---|
| TestWell (drawn at Labcorp) | $39.99 | $45.99 | Includes the one $6 lab processing fee, charged once per order |
| Quest Health (Quest Diagnostics' own site) | $52.00 | $52.00 | list price checked Sep 12, 2026 |
| Labcorp OnDemand (Labcorp's own site) | $69.00 | $69.00 | list price checked Sep 12, 2026 |
| Hospital outpatient lab, self-pay (typical) | $140.00 | $140.00 | Reference figure; hospital charges vary widely by facility and are often higher |
12% less than the lower lab-direct list price, for the same draw at the same lab. Lab test codes: Quest test code 16599 · Labcorp test no. 070034. Competitor prices are read from the linked public pages and re-checked regularly; the labs' sites may add taxes or change prices without notice.
Compare more: Quest Diagnostics price list · Labcorp price list · Quest vs Labcorp · Lab test price checker
Most Iodine results are available in 3–7 business days after your specimen arrives at the lab. You'll get an email the moment results are ready, with everything viewable in your TestWell portal.
Urine sample. Follow the sample-collection instructions included with your order kit.
On TestWell, the Iodine is $39.99. Quest Direct lists comparable tests at $52. Walk-in hospital labs typically bill $140 or more without insurance. Insurance is not required — pay one all-in price.
The Iodine is available at Labcorp patient service centers nationwide. Order online at TestWell, pick your preferred lab, and we'll generate a digital requisition for the location closest to you.
Ordered directly, an Iodine test lists at $52.00 at Quest Health (Quest Diagnostics' own site) and $69.00 at Labcorp OnDemand (prices checked September 2026). TestWell orders the same test at the same Labcorp patient service centers for $39.99 — $45.99 all-in with the $6 per-order lab processing fee — paid out of pocket at checkout with no insurance, doctor's visit or draw fee; HSA and FSA cards are accepted.
No, fasting is not required for an Iodine test — you can eat normally and book any time of day. Random urine sample.
The Iodine test is Quest Diagnostics test code 16599, Labcorp test number 070034 ("Iodine, Serum or Plasma"). TestWell orders it under those codes for $39.99 at Quest or Labcorp — no doctor's visit or insurance required, results in 3–7 business days. Codes verified against the labs' catalogs in 2026.
Medically reviewed by Youmna DiStefano, MD · Last reviewed September 2026
TestWell Price
$39.99
+ $6 lab processing fee at checkout
No insurance needed · HIPAA compliant
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