Zinc mass concentration in blood (serum/plasma)

Why Is This Test Done?

Your healthcare provider may order this test to check for zinc deficiency, especially if you have symptoms like frequent infections, slow wound healing, or hair loss. It can also be used to monitor zinc levels in people with certain medical conditions, such as malabsorption disorders or chronic illnesses.

What to Expect Before the Test

No special preparation is usually needed. For blood tests, you may have a small needle inserted into your arm to draw blood. If you’re on a fasting diet, follow your provider’s instructions. For urine tests, you might collect a sample over a 24-hour period.

What the Results Mean

Results are typically reported as the amount of zinc in micrograms per deciliter (mcg/dL) or milligrams per deciliter (mg/dL). While reference ranges vary by lab, low levels may indicate deficiency, while very high levels could signal conditions like kidney disease or certain medications.

Common Conditions Affecting Zinc Levels

Zinc deficiency can occur due to poor diet, digestive issues (like celiac disease or Crohn’s), or certain medications. High levels may be linked to kidney problems, excessive zinc supplements, or rare genetic disorders.