Lab test

Zinc Blood Test - Zinc Deficiency Testing

A zinc blood test measures the level of zinc in the blood and can provide information about deficiency or excess.

Typical price

From $38

Results

1-3 business days

Preparation

See preparation notes below

Sample

Blood draw or sample collection at a local center

A zinc blood test measures the level of zinc in the blood and can provide information about deficiency or excess. Zinc is a trace mineral involved in immune function, wound healing, growth, and many enzyme reactions. The test may be ordered for poor wound healing, frequent infections, a diet low in zinc, or a digestive condition that limits absorption. Because zinc in blood is influenced by inflammation, diet, and the time of day, results are interpreted together with symptoms and other findings rather than on their own.

• Zinc (serum or plasma) Measures the amount of zinc circulating in the blood.

• People with poor wound healing or frequent infections
• Individuals with a diet low in zinc or restricted eating patterns
• People with digestive conditions that affect absorption
• Those with hair loss, skin changes, or taste changes being evaluated

• A morning draw may be preferred because zinc levels vary through the day.
• Fasting is sometimes requested.
• Tell the collector about zinc supplements you take.
• Follow any instructions provided for your specific panel.

A low zinc level may suggest deficiency, which can relate to diet, absorption, or increased losses, while a high level may occur with excessive supplementation. Because blood zinc can be affected by inflammation and recent intake, a normal result does not always rule out deficiency. Discuss results with a healthcare provider, who can interpret them with your symptoms.

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