Zinc (Zn) (bl)
A zinc blood test measures the concentration of zinc, an essential trace element, in your bloodstream. Zinc is vital for numerous physiological functions, including protein synthesis, enzyme activity, and immune system support. It’s a component of many high-protein foods such as meat, fish, and dairy products.
This test is typically ordered to assess zinc deficiency or, less commonly, zinc excess. Symptoms of zinc deficiency can be non-specific and may include impaired growth, weakened immune response, and general growth impairment.
It’s important to note that blood zinc levels may not always reflect the body’s total zinc status, as zinc is distributed throughout various tissues.
The procedure involves drawing a blood sample, usually from a vein in your arm. No special preparation is required, but it’s advisable to inform your healthcare provider about any medications or supplements you’re taking, as certain substances can affect zinc levels. For instance, thiazide diuretics can increase zinc loss through urine.
Understanding your zinc levels can aid in diagnosing deficiencies or excesses, allowing for appropriate dietary adjustments or supplementation as needed.