Zinc Blood Test
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.
Why Test Zinc?
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 Do High Zinc Levels 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 Do Low Zinc Levels 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.
Symptoms to Watch For
- Frequent colds and infections
- Slow wound healing
- Acne, eczema, or dermatitis
- Hair loss or brittle nails
- Loss of taste or smell
- Low testosterone and reduced libido
- Impaired growth in children
Who Should Get Tested?
- Vegetarians, vegans, and those avoiding red meat or seafood
- People with high alcohol consumption
- Adults over 60 seeking to support immune function
- Athletes and physically active individuals
- Pregnant or breastfeeding women
- Anyone with chronic skin problems, frequent infections, or slow recovery
How to Prepare for Your Test
Fasting for 10-12 hours is recommended, as zinc concentrations may decrease after meals. Bring valid ID to your appointment.
Order Your Blood Test
Test your Zinc levels with an accredited Swedish laboratory. Results within days, reviewed by Wellth.
Frequently Asked Questions
Why should zinc and albumin be tested together?
Can zinc supplementation be harmful?
How does zinc affect fertility?
Reviewed by
Wellth Team
Wellth
Our content is written and reviewed by Wellth, and fact-checked against peer-reviewed research and current Swedish clinical guidelines.
Learn more about our team →Medical Disclaimer
The information on this page is provided for informational purposes only and does not constitute professional medical advice, diagnosis, or treatment. Wellth provides health information and testing services but is not a substitute for clinical care. Always consult a qualified healthcare provider if you have questions about a medical condition. If you are experiencing severe or urgent symptoms, contact your doctor or call 1177 Vårdguiden. Blood test results should be interpreted by a qualified healthcare professional in the context of your complete medical history.