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At-Home Crucial Thyroid Test

At-Home Crucial Thyroid Test

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The Lab Me Crucial At-Home Thyroid Test gives a basic but complete assessment of thyroid health, including screening for hypo or hyperthyroidism, testing for auto-immune thyroid disease, and monitoring thyroid replacement dosage.

What tests are included?
  • TSH (Thyroid Stimulating Hormone),
  • Free T3 (Triiodothyronine),
  • Free T4 (Thyroxine),
  • TPOab (Thyroid Peroxidase Antibody),
Collection Method
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If purchasing for two people, it’s required to create their account to order.

All Lab Me tests are performed by high-complexity CLIA certified and CAP-accredited laboratories.


Premium At-Home Blood Tests From Lab Me

All Premium Test Kits From Lab Me Come In A HIPPA Secure PDF Format With Functional Medicine Physician Reviewed Recommendations. You Are Able To Ask Our Medical Team As Many Questions As You Want Regarding Your Results.

Who Should Consider Taking This At-Home Crucial Thyroid Test ?

Thyroid dysfunction can explain a wide variety of symptoms because of the central role of thyroid hormones in directing the metabolic activity of cells.  The essential thyroid profile accesses the overall thyroid health, which includes checking for hypothyroidism and hyperthyroidism, determines Free T3 and Free T4 levels, monitors dosages for thyroid replacement and tests for autoimmune thyroid disease.

The Crucial At-Home Thyroid Blood Spot Profile includes TSH, Free T4, Free T3, and TPOab.

This profile is not only for those requiring a thyroid screening.  This profile is also used as a routine screening for:   

  • Women trying to get pregnant or who are pregnant
  • Individuals over the age of 50
  • People with other autoimmune disorders, especially those with a history of autoimmune thyroiditis
  • Anyone with a family history of thyroid disorders
  • People, including children, who have Down’s Syndrome
  • People experiencing symptoms of thyroid dysfunction
Symptoms and Reasons to Test
Normal Ranges
Why track?
Should I take the test?
Additional Info

Symptoms and Reasons to Test

The Crucial At-Home Thyroid Test Is Encouraged If You Are Experiencing:

Overactive Thyroid Symptoms

  • nervousness, anxiety and irritability
  • hyperactivity – you may find it hard to stay still and have a lot of nervous energy
  • mood swings
  • difficulty sleeping
  • feeling tired all the time
  • sensitivity to heat
  • muscle weakness
  • diarrhoea
  • needing to pee more often than usual
  • persistent thirst
  • itchiness
  • loss of interest in sex

Underactive Thyroid Symptoms

  • Fatigue
  • Increased sensitivity to cold
  • Constipation
  • Dry skin
  • Weight gain
  • Puffy face
  • Hoarseness
  • Muscle weakness
  • Elevated blood cholesterol level
  • Muscle aches, tenderness and stiffness
  • Pain, stiffness or swelling in your joints
  • Heavier than normal or irregular menstrual periods
  • Thinning hair
  • Slowed heart rate
  • Depression
  • Impaired memory
  • Enlarged thyroid gland (goiter)

Normal Ranges

Crucial At-Home Thyroid Test Ranges (Women & Men)

Free Thyroxine (T4) mg/dL


Free Triiodothyronine (fT3) pg/mL


Thyroid Peroxidase Antibodies (TPOab) IU/mL

Borderline: 70-150

Thyroid Stimulating Hormone (TSH) μU/mL


Why Track?

Should I Take The Test?

Additional Info

Biomarkers Explained


  • Weight gain or inability to lose weight despite exercise and diet
  • Feeling cold all the time (when others don’t)
  • Low energy and stamina, especially in the evening
  • Memory lapses or slow/fuzzy thinking
  • Dry, thinning, itchy skin
  • Dry or brittle hair and nails
  • Hair loss
  • Irregular bowel habits
  • Menstrual irregularities


  • Sudden or significant weight loss
  • Rapid or irregular heartbeat
  • Sweating
  • Nervousness or irritability

Biomarkers For Crucial At-Home Thyroid Test Explained


Produced by the pituitary gland, TSH acts on the thyroid gland to stimulate production of the thyroid hormone thyroxine (T4).

Free T4 – Thyroxine

The predominant hormone produced by the thyroid gland, T4 is converted to its active form, T3, within cells.  For this biomarker please see the Lab Me at-home comprehensive thyroid test.

Total T4 – Thyroxine

Total T4 includes both free T4 and protein-bound T4, and is an indicator of the thyroid gland’s ability to synthesize, process and release T4 into the bloodstream.

Free T3 – Triiodothyronine

T3 is the active thyroid hormone that regulates the metabolic activity of cells.

TPOab – Thyroid Peroxidase Antibodies

Thyroid peroxidase is an enzyme involved in thyroid hormone production. The body produces antibodies, including TPOab, that attack the thyroid gland in autoimmune thyroiditis and Hashimoto’s. Testing TPOab levels can diagnose these conditions.

Tgbn – Thyroglobulin

A protein rich in tyrosine, the residues of which when bound to iodine become the building blocks of T3 and T4. If iodine levels are low, thyroglobulin accumulates, thus high levels indicate insufficient iodine for healthy thyroid function.  For this biomarker please see the Lab Me at-home comprehensive thyroid test.

How to collect your sample

Lab Me’s at home test kits include everything you need for collection and can be ordered online. When your sample has been collected and allowed to dry completely, return the dried strips and completed paperwork in the pre-addressed, pre-paid packaging and mailer bag provided with the kit. Once Lab Me has received your sample, results will be returned to you and/or your health care provider in approximately 5 to 7 business days.
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This Is How

Lab Me Works


Get Your Lab Me Kit

Order online and choose how often you’d like a test. We’ll mail your kit and it’ll be in your hands within only a few days.


Perform Your Test

Your kit contains everything you need to test from home. When you’re done, use the pre-paid envelope to send it back


Rapid, Accurate Results

Once we receive the test and process it, the results will be on your dashboard within 48 hours.

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