Vitamins & minerals
Zinc
LOINC 5763-2 · mcg/dL
Ranges
Reference range: 70–120 mcg/dL
What it is
Zinc is a trace mineral the body needs for immune function, wound healing, taste, smell and many enzymes.
Why it matters
The test checks zinc status, relevant to immunity, skin and growth.
What high values can mean
A higher value usually reflects supplements; very high intake can interfere with copper.
What low values can mean
A lower value can affect immunity, taste and healing and may follow poor intake or absorption problems.
How to improve it
A varied diet usually provides enough; supplements correct a deficiency but should be balanced with copper.
Food & lifestyle
Meat, shellfish, legumes, seeds and nuts are good sources of zinc.
Preparing for the test
A blood test; fasting may be requested — follow your lab's instructions.
When to talk to a doctor
Discuss a low or high zinc with a doctor before taking ongoing supplements.
Related markers
Sources
- NIH Office of Dietary Supplements
- MedlinePlus (NIH)
Content reviewed on June 26, 2026
Medical disclaimer
This content is for educational purposes only. It is not medical advice and does not diagnose, treat, or prevent any condition. Reference ranges vary between laboratories — always use the range printed on your report and discuss your results with a healthcare professional.
See your own values in context
Bllod turns your lab report PDFs into clear, tracked results — every marker organized, explained, and charted over time.