Haptoglobin

• excessive bleeding
• fainting or feeling light-headed
• hematoma (blood accumulating under the skin)
• infection (a slight risk any time the skin is broken)
• multiple punctures to locate veins

Haptoglobin levels may be affected by the presence of liver disease or kidney disease, extensive blood loss, and a variety of conditions that affect liver and kidney function.

Drugs that can raise haptoglobin levels include androgens and corticosteroids

Drugs that can lower haptoglobin levels include birth control pills, chlorpromazine, diphenhydramine, indomethacin, isoniazid, nitrofurantoin, quinidine, and streptomycin.

Veins and arteries vary in size from one patient to another and from one side of the body to the other. Obtaining a blood sample from some people may be more difficult than from others.

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