Total Antioxidant Capacity of Serum (Total Radical Scavenging Capacity)

What Does This Test Measure?

Total antioxidant capacity reflects the combined ability of various antioxidants in your blood—such as vitamins (like C and E), enzymes, and other molecules—to neutralize free radicals. Free radicals are unstable molecules that can cause damage to cells and tissues if left unchecked. This test helps evaluate your overall oxidative balance, which is important for preventing chronic diseases linked to oxidative stress.

Why Might You Need This Test?

Doctors may order this test if you have symptoms or conditions associated with oxidative stress, such as chronic inflammation, autoimmune diseases, or a history of oxidative damage. It can also be part of routine health assessments for individuals at higher risk of oxidative-related illnesses.

Common Conditions or Symptoms Linked to This Test

While this test isn’t typically ordered for routine screening, it may be used in specialized cases, such as evaluating antioxidant status in patients with metabolic disorders, aging-related conditions, or those undergoing treatments that increase oxidative stress (e.g., chemotherapy).

How Is the Test Performed?

A blood sample is drawn from a vein, usually in your arm. The serum portion of your blood is then analyzed in a lab to measure its antioxidant capacity using a specialized method that detects the test’s ability to neutralize free radicals.