Serum phosphorus

Injury Disease Nutrition Poison Symptoms Surgery Test Special Topic

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Blood test

Overview Risks Results

Serum phosphorus

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

Antacids can bind PO4 and decrease absorption.

Nonpharmacological factors that can affect PO4 measurements include: enemas containing sodium phosphate, excess vitamin D supplements, and intravenous glucose administration (because PO4 enters cells along with glucose).

Drugs that can increase PO4 measurements include: laxatives containing Na2HPO4 (sodium phosphate), methicillin, and excess vitamin D or 1,25-dihydroxy vitamin D.

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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