Serum or plasma mass concentration of vitamin C (ascorbic acid)

Why Is This Test Done?

Your healthcare provider may order this test to check for vitamin C deficiency, monitor vitamin C levels in certain conditions (like chronic illnesses), or evaluate how your body absorbs and uses vitamin C. It can also help diagnose or manage scurvy or other vitamin C-related disorders.

What Does a Low or High Level Mean?

Low levels of vitamin C might indicate poor nutrition, certain medical conditions, or medications that interfere with absorption. High levels could suggest overconsumption of supplements or rare metabolic issues.

How Is the Test Performed?

A blood sample is taken from a vein in your arm. The sample is sent to a lab where vitamin C is measured using a specialized method, often enzymatic or chromatographic techniques.

What Are Common Causes of Abnormal Results?

Deficiency may result from inadequate dietary intake, malabsorption issues, or certain medications. Overproduction or prolonged high levels can occur with excessive vitamin C supplements or metabolic disorders.