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Thyroid

Thyroglobulin Test

Thyroglobulin is a thyroid protein that may provide insight into thyroid gland function for active individuals. Some sports medicine providers note that thyroid health can influence metabolic rate, energy availability, and the body's response to training demands.

Doctor's Assessment Included

Reference Ranges

See the value that applies to you:

Choose male or female — this range differs by sex.

Enter your age — this range changes with age.

This range also depends on context such as cycle phase or sample material; the highlighted rows apply to your group.

Male Your group
ug/l
Low 3.5 Normal 77 High
Female Your group
ug/l
Low 3.5 Normal 77 High

Reference ranges may vary between laboratories. When you order a test, a BIG-registered doctor assesses your personal results in context. For treatment decisions, discuss your results with your GP.

Check your own value

Thyroglobulin: what this test measures

This test measures the level of thyroglobulin protein in your blood. Thyroglobulin is produced exclusively by the thyroid gland and is used in the synthesis of T3 and T4 hormones. Its levels may reflect the size and activity of the thyroid gland.

Thyroglobulin: why this value matters

For active individuals, thyroglobulin may help assess thyroid gland activity, which can influence metabolic efficiency and recovery. Some research suggests that intense training can affect thyroid function. Monitoring thyroglobulin might contribute to understanding overall training readiness.

Thyroglobulin: how to prepare

  1. Pause biotin

    Required

    Do you take a supplement with biotin (vitamin B8, common in hair, skin and nail supplements)? Stop it 72 hours before the draw. Biotin interferes with the measurement of these values.

  • Water is always fine. Drink as usual beforehand, it makes the draw easier.
  • Take your usual medication, unless your own doctor told you otherwise.

Thyroglobulin: when is testing worthwhile?

Some people may consider testing thyroglobulin when monitoring thyroid health, when thyroid enlargement is suspected, or as part of follow-up care for certain thyroid conditions. Your healthcare provider can recommend whether thyroglobulin testing is appropriate for your needs.

Thyroglobulin: symptoms of a high or low value

Low Levels

Some people with low thyroglobulin levels might not experience specific symptoms, as low levels can occur naturally. In certain clinical contexts, very low levels may have specific significance. Your healthcare provider can interpret your results based on your individual health history.

High Levels

Some people with elevated thyroglobulin levels may not notice specific symptoms directly attributable to the protein itself. High levels might be associated with thyroid enlargement, inflammation, or increased thyroid activity. Your healthcare provider can determine the clinical significance.

Thyroglobulin: lifestyle and this value

Some people may support overall thyroid health by ensuring adequate iodine intake, managing stress, and maintaining a nutrient-rich diet. Regular check-ups with your healthcare provider can help monitor thyroglobulin levels over time. Avoid self-supplementing iodine without medical guidance.

Thyroglobulin: frequently asked questions

What does a high thyroglobulin level mean?

Elevated thyroglobulin levels may indicate increased thyroid activity, thyroid enlargement, or inflammation. The clinical significance depends on your individual context. Your healthcare provider will interpret the results alongside other thyroid markers and your health history.

Is thyroglobulin the same as thyroglobulin antibodies?

No, they are different tests. Thyroglobulin measures the protein itself, while thyroglobulin antibodies detect immune proteins that target thyroglobulin. Both may be tested together, as antibodies can interfere with accurate thyroglobulin measurement.

How often should thyroglobulin be tested?

Testing frequency depends on your individual circumstances and what your healthcare provider is monitoring. For general thyroid health assessment, periodic testing may be sufficient. Your healthcare provider can recommend an appropriate schedule based on your needs.

Tests with related values

These panels measure values from the same category as this marker.

Whoop

Whoop Women's Health

A 54-biomarker women's health panel inspired by the WHOOP Women's Health Panel — fertility, cycle and thyroid hormones plus a complete metabolic and nutrient base.

Complete Blood Count (CBC) ALP (Alkaline Phosphatase) ALT (Alanine Aminotransferase) AST (Aspartate Aminotransferase) Albumin Total Protein Bilirubin (Total) ApoB (Apolipoprotein B) Total Cholesterol LDL Cholesterol HDL Cholesterol Triglycerides Lipoprotein(a) Urea (BUN) Creatinine eGFR (Estimated Glomerular Filtration Rate) Calcium Bicarbonate Chloride Sodium Potassium Magnesium Cortisol DHEA-S Estradiol (E2) FSH (Follicle Stimulating Hormone) LH (Luteinizing Hormone) SHBG (Sex Hormone Binding Globulin) Total Testosterone Free Testosterone TSH (Thyroid Stimulating Hormone) Glucose (Fasting) HbA1c (Glycated Hemoglobin) Insulin (Fasting) HOMA-IR CRP (C-Reactive Protein) Homocysteine Ferritin Iron (Serum) Transferrin Transferrin Saturation Vitamin D (25-OH) AMH (Anti-Müllerian Hormone) Progesterone Prolactin TPO Antibodies Free T3 (Triiodothyronine) Free T4 (Thyroxine) Leptin Vitamin B12 Folate (Folic Acid) Phosphorus Bilirubin (Direct) Bilirubin (Indirect)
€709,-
Complete Health

360 Health

Broad health panel: hormones, thyroid, vitamins, lipids, liver, kidney, and blood count.

HbA1c (Glycated Hemoglobin) TSH (Thyroid Stimulating Hormone) Triglycerides Urea (BUN) Creatinine eGFR (Estimated Glomerular Filtration Rate) Free T4 (Thyroxine) LDL Cholesterol Liver Function Test (LFT) SHBG (Sex Hormone Binding Globulin) Vitamin B12 Vitamin D (25-OH) Total Testosterone Free T3 (Triiodothyronine) Ferritin HDL Cholesterol Albumin Total Cholesterol Basic Blood Count
€346,-
Whoop

Whoop Performance Health

A 51-biomarker performance panel inspired by the WHOOP Performance Health Panel — recovery, blood production, thyroid, hormones, iron and nutrient status for people who train.

Complete Blood Count (CBC) ALP (Alkaline Phosphatase) ALT (Alanine Aminotransferase) AST (Aspartate Aminotransferase) Albumin Total Protein Bilirubin (Total) ApoB (Apolipoprotein B) Total Cholesterol LDL Cholesterol HDL Cholesterol Triglycerides Lipoprotein(a) Urea (BUN) Creatinine eGFR (Estimated Glomerular Filtration Rate) Calcium Bicarbonate Chloride Sodium Potassium Magnesium Cortisol DHEA-S Estradiol (E2) FSH (Follicle Stimulating Hormone) LH (Luteinizing Hormone) SHBG (Sex Hormone Binding Globulin) Total Testosterone Free Testosterone TSH (Thyroid Stimulating Hormone) Glucose (Fasting) HbA1c (Glycated Hemoglobin) Insulin (Fasting) HOMA-IR CRP (C-Reactive Protein) Homocysteine Ferritin Iron (Serum) Transferrin Transferrin Saturation Vitamin D (25-OH) IGF-1 (Insulin-like Growth Factor) Creatine Kinase (CK) Reticulocytes Free T3 (Triiodothyronine) Free T4 (Thyroxine) Vitamin B12 Folate (Folic Acid) Bilirubin (Direct) Bilirubin (Indirect)
€689,-
Whoop

Whoop Metabolic Health

A 52-biomarker metabolic panel inspired by the WHOOP Metabolic Health Panel — blood sugar regulation, insulin, thyroid, liver and the mineral cofactors behind your metabolism.

Complete Blood Count (CBC) ALP (Alkaline Phosphatase) ALT (Alanine Aminotransferase) AST (Aspartate Aminotransferase) Albumin Total Protein Bilirubin (Total) ApoB (Apolipoprotein B) Total Cholesterol LDL Cholesterol HDL Cholesterol Triglycerides Lipoprotein(a) Urea (BUN) Creatinine eGFR (Estimated Glomerular Filtration Rate) Calcium Bicarbonate Chloride Sodium Potassium Magnesium Cortisol DHEA-S Estradiol (E2) FSH (Follicle Stimulating Hormone) LH (Luteinizing Hormone) SHBG (Sex Hormone Binding Globulin) Total Testosterone Free Testosterone TSH (Thyroid Stimulating Hormone) Glucose (Fasting) HbA1c (Glycated Hemoglobin) Insulin (Fasting) HOMA-IR CRP (C-Reactive Protein) Homocysteine Ferritin Iron (Serum) Transferrin Transferrin Saturation Vitamin D (25-OH) Leptin Zinc Selenium Iodine Copper Free T3 (Triiodothyronine) Free T4 (Thyroxine) GGT (Gamma-Glutamyl Transferase) Bilirubin (Direct) Bilirubin (Indirect)
€799,-

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Medical standards

Dr. Naimi oversees the medical standards behind our content and assessments.

Medical policy
CIBG Ministerie van Volksgezondheid,
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Thyroglobulin

€59,-