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Urinary Iodine Test – Regenerus

£181.00

Iodine is critical for normal metabolism and optimal health. It is essential to produce thyroid hormones, which regulate our metabolism, and neuronal and sexual development, as well as for the health of the breast tissue, cervix, stomach lining and salivary glands. Insufficiency is associated with thyroid under function, fibrocystic breast disease and cancer.

This single-marker test measures urinary excretion of iodine after the administration of a loading dose of iodide/iodine. The test requires a spot urine specimen, to determine your of baseline levels. An oral loading dose of iodine/iodide is then ingested and all urine is collected for the subsequent 24 hours.

Iodine status is assessed by evaluation of the percentage of the ingested dose that is excreted. Low iodine excretion is suggestive of greater bodily retention and need.

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Key Information

Iodine deficiency generally occurs when intake is less than 20 mcg/day over a prolonged period of time. Mild or moderate iodine deficiency may cause an enlarged thyroid gland (goitre) with no other symptoms. If iodine deficiency is severe enough to prevent adequate production of thyroid hormones (hypothyroidism), this causes many symptoms due to a decreased metabolic rate:

  • Fatigue
  • Depression
  • Mental sluggishness or brain fog
  • Weight gain or inability to lose weight
  • Dry skin
  • Hair loss
  • Constipation
  • Slow reflexes
  • Decreased fertility
  • Low libido
  • Decreased body temperature
  • Decreased heart rate


The Urinary Iodine Test is for people who want to check their iodine level. It’s particularly suitable for those who:

  • Have had irregular results from thyroid tests such as TSH, T3 and T4 and want to investigate whether an iodine imbalance is affecting their thyroid function.
  • Suffer with fibrocystic breast disease or have a history of breast or cervical cancer.


Suffer with chronic fatigue or persistently lowered immunity.

This test measures excreted iodine in the urine to analyse thyroid function and immune system health.

24-hour urine collection.

Do not drink more than 3.5L of liquids during the collection period.

Avoid the following foods and medications for 5 days prior to and during the collection period:

  • Seaweed/kelp
  • Fish
  • Sea vegetables
  • Other foods containing iodide/iodine
  • Iodine supplements (other than the prescribed loading dose)
  • Non-essential medications


Do not discontinue prescription medications without consulting with your healthcare provider.

Women should not collect urine while menstruating.

  1. Order Your Test with an Optional Consultation
    We will be sent your results first and will then dispatch them to you. We offer a service to interpret your results and provide you with recommendations to improve any findings within them. This requires a consultation which can be added to your order at the time of booking.
  2. Collect Your Sample at Home
    Every test comes with clear instructions on how to collect your samples.
  3. Return Your Test
    Once you’ve collected your sample, simply return it to the lab using the prepaid shipping label included in your kit. Your samples need to be sent guaranteed next day delivery or via courier please do not send samples on a Friday.
  4. Analysis and Result Interpretation
    Once processed, your results will be sent to us. We can then provide you with this information directly.
  5. Optional – Book a Consultation with Our Team
    Schedule a consultation with one of our team to discuss your results and develop a personalised treatment plan tailored to your needs. Our team will guide you through the findings and offer recommendations to target any of the finding in your test.
This test is processed by Regenerus Labs, by purchasing this test you agree to their privacy policy

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