Minerals & Metals
Zinc (Serum)
Minerals & Metals
Supports immunity, skin health and hormone production. Common deficiency.
VAT-exempt medical service
A serum zinc test measures the level of zinc circulating in your blood. Zinc plays a critical role in immune system function, skin integrity, bone strength, recovery after exercise, and healthy ageing. Even minor deficiencies can lead to frequent infections, slow wound healing, and impaired growth during key life stages such as pregnancy and childhood.
Testing zinc is recommended as part of a comprehensive health check. Vegetarians, vegans, people who avoid red meat and seafood, heavy alcohol consumers, and individuals over 60 are at higher risk of deficiency. Athletes benefit from monitoring zinc to maintain performance and muscle development. If you experience frequent colds, slow wound healing, skin issues, or low testosterone, a zinc test can help identify the cause.
What a high value can mean
High zinc levels are uncommon because excess zinc is normally excreted via urine and faeces. Elevated levels are most often caused by excessive supplementation, industrial exposure, or contact with zinc-containing household products such as paint, varnish, and cleaning agents.
What a low value can mean
Low zinc may indicate dietary deficiency or impaired absorption. Since the body also lowers zinc during infection as part of the acute-phase response, results should always be interpreted alongside albumin levels and clinical symptoms. Zinc deficiency can take a long time to appear on a blood test, making early and regular testing valuable.
Fasting for 10-12 hours is recommended, as zinc concentrations may decrease after meals. Bring valid ID to your appointment.
Order your test
Choose your test and pay online. Your lab referral is created straight away.
Give your sample
Visit any of our partner sampling locations. No appointment needed at most of them.
The lab analyses it
Your sample is analysed at an accredited Swedish laboratory.
Get your results
Your values appear in your account with reference ranges and an explanation of each marker.
Zinc binds to albumin in the blood. Low zinc with normal albumin suggests true zinc deficiency, while low zinc combined with low albumin often indicates an acute-phase infection response rather than deficiency.
Excessive long-term zinc supplementation can interfere with copper absorption, potentially leading to copper deficiency and associated neurological issues. Always follow recommended dosing.
Zinc supports fertility in both men and women. In men, it is essential for sperm production and healthy testosterone levels.