Phosphorus - serum; HPO4^-2, PO4^-3; Inorganic phosphate; Phosphorus blood test

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.

Other risks associated with having blood drawn are slight but may include:

• Excessive bleeding
• Fainting or feeling lightheaded
• Hematoma (blood accumulating under the skin)
• Infection (a slight risk any time the skin is broken)

The following can affect phosphorous levels:

• Antacids
• Enemas containing sodium phosphate
• Excess vitamin D supplements
• Glucose through a vein (intravenous)
• Laxatives containing sodium phosphate
• Methicillin

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Review Date: 11/15/2009
Reviewed By: David C. Dugdale, III, MD, Professor of Medicine, Division of General Medicine, Department of Medicine, University of Washington School of Medicine. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

A.D.A.M., Inc. is accredited by URAC, also known as the American Accreditation HealthCare Commission (www.urac.org)