A haptoglobin test measures the amount of haptoglobin in your blood. Haptoglobin is a protein produced by your liver. It binds with hemoglobin, which is a protein found in red blood cells. Red blood ...

In patients with chronic spontaneous urticaria (CSU), the amount of haptoglobin in serum correlated with markers of systemic inflammation, decreased after treatment, and helped predict who would ...