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Minerals

Selenium Blood Test

Selenium supports immune resilience and cognitive health, both of which may benefit from extra attention as you age. Regular monitoring helps maintain antioxidant protection.

Doctor's Assessment Included

Selenium: what this test measures

This test measures the level of selenium in your blood. It reflects your dietary intake and selenium status, which is important for various selenoprotein functions.

Selenium: why this value matters

Selenium supports thyroid hormone metabolism, immune function, and protects cells from oxidative damage. Both deficiency and excess can affect health. Consult your healthcare provider for personalised advice.

Selenium: when is testing worthwhile?

Testing may be recommended if you have thyroid disorders, live in a selenium-poor region, or have a restricted diet. It may also be relevant for those concerned about antioxidant status.

Selenium: symptoms of a high or low value

Low Levels

Symptoms of selenium deficiency may include fatigue, weakened immunity, thyroid dysfunction, muscle weakness, and cognitive decline. Severe deficiency can affect heart health.

High Levels

Excess selenium may cause garlic breath, hair loss, brittle nails, nausea, and neurological symptoms. Toxicity is usually from over-supplementation. Consult your healthcare provider.

Selenium: what to do about an abnormal value

Male

If Low

Low selenium may affect thyroid function and immune system. Consider Brazil nuts.

If High

High selenium can be toxic. Reduce supplementation.

Female

If Low

Low selenium may affect thyroid function. Consider Brazil nuts or supplementation.

If High

High selenium can be toxic. Reduce supplementation.

Selenium: lifestyle and this value

Brazil nuts are one of the richest sources of selenium — just 1-2 nuts per day may provide adequate intake. Other sources include seafood, eggs, and whole grains. Avoid excessive supplementation.

Selenium: frequently asked questions

How much selenium do I need daily?

Daily requirements are small. Your healthcare provider can advise on the right amount based on your individual needs. Excessive intake should be avoided.

Can selenium support thyroid health?

Yes, selenium is essential for converting thyroid hormones and may support thyroid function. It is often considered alongside iodine when evaluating thyroid health.

Are Brazil nuts really that high in selenium?

Yes, Brazil nuts are exceptionally rich in selenium. Just one or two per day can provide more than the daily recommended amount, making them both a convenient source and a risk for overconsumption.

Tests with related values

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

Heart & Metabolism

GLP-1 Baseline Panel

Your starting point before the first injection: blood sugar, cholesterol, pancreas, liver, kidneys, thyroid and nutrients in one measurement.

Insulin (Fasting) ALT (Alanine Aminotransferase) TSH (Thyroid Stimulating Hormone) AST (Aspartate Aminotransferase) HDL Cholesterol HbA1c (Glycated Hemoglobin) Bilirubin (Total) ApoB (Apolipoprotein B) Vitamin B12 Ferritin Potassium Sodium Glucose (Fasting) Total Cholesterol Albumin Lipase Creatinine Vitamin D (25-OH) Triglycerides Bilirubin (Direct) Bilirubin (Indirect)
€214,-
Heart & Metabolism

GLP-1 Extended Panel

The 6-month measurement: everything from the check-in plus insulin, ApoB and your nutrients — especially relevant if you have been eating much less for a while.

Insulin (Fasting) ALT (Alanine Aminotransferase) AST (Aspartate Aminotransferase) HDL Cholesterol HbA1c (Glycated Hemoglobin) ApoB (Apolipoprotein B) Vitamin B12 Ferritin Potassium Sodium Glucose (Fasting) Total Cholesterol Albumin Lipase Creatinine Vitamin D (25-OH) Triglycerides
€196,-

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Medical standards

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Selenium

€81,-