Zinc, Serum
General · Blood
Available at 0 labs
No lab currently offers this test.
About this test
What is a Serum Zinc Test?
- Measures the amount of zinc, an essential trace mineral, in the blood.
- Zinc is involved in enzyme function, immune response, wound healing, and DNA synthesis.
Key Parameter
| Parameter | What it shows |
|---|---|
| Serum Zinc (µg/dL) | Concentration of zinc circulating in the bloodstream |
Why the Test is Done
- Routine health check‑up to assess overall mineral status.
- Evaluation of symptoms such as hair loss, impaired taste, or poor wound healing.
- Monitoring patients on long‑term zinc supplementation or those with malabsorption.
- Screening for zinc deficiency in high‑risk groups (pregnancy, elderly, chronic illness, malnutrition).
Early Detection
The test can help identify signs of zinc deficiency or excess, but it does not diagnose a disease on its own. A doctor interprets the result together with symptoms, history, and other tests.
What Abnormal Results May Indicate
- Low serum zinc may suggest dietary deficiency, malabsorption, chronic liver or kidney disease, alcoholism, or certain genetic disorders.
- High serum zinc can occur after recent supplementation, occupational exposure, or acute inflammation.
Many factors—hydration status, recent meals, medications, and time of day—can influence the reading, so results should be viewed in context.
Who Might Be Advised to Get This Test?
- Pregnant or breastfeeding women.
- Individuals with chronic gastrointestinal disorders (celiac disease, Crohn’s disease).
- Elderly patients or those with poor nutritional intake.
- Patients on long‑term zinc supplements or with occupational exposure to zinc.
- Those experiencing unexplained hair loss, taste disturbances, or delayed wound healing.
Quick Summary
Serum zinc testing measures the level of zinc in your blood, helping clinicians spot potential deficiencies or excesses that could affect immune function, healing, and overall health.
Used for detecting / monitoring
Before your test
- Fasting: No fasting required for a serum zinc test.
- Combined tests: If you are also having tests that require fasting (e.g., fasting glucose), follow the fasting instructions for those tests.
- Procedure: A healthcare professional will draw a small amount of blood (usually 5–10 mL) from a vein in your arm using a needle. The process takes about 5 minutes.
- Discomfort: You may feel a brief pinch or sting when the needle is inserted. The sample is collected in a standard blood tube.
- Precautions: No special medication timing or hydration instructions are needed for this test. Avoid excessive alcohol or strenuous exercise on the day of the test if you are also undergoing other assessments that require it.
- Final note: Confirm any specific preparation details with your doctor or the laboratory. This information is general educational content and not a substitute for professional medical advice.
Sample type: Blood
Report parameter guide
Zinc
A mineral essential for many body functions, including immune response, enzyme activity, and protein synthesis
Low: May indicate zinc deficiency, which can cause growth retardation, impaired immune function, hair loss, and skin problems
High: May indicate zinc excess, which can lead to nausea, vomiting, loss of appetite, and interference with copper absorption