Blood uric acid
Uric acid is a body waste that results from the degradation of purines. Purines are substances that are naturally present in certain foods and alcoholic beverages. They are the building blocks of DNA, which is found in the body's cells.
The majority of uric acid is eliminated by the kidneys, while the remainder is excreted in the stools. There are several reasons for high uric acid levels in the blood, such as a high intake of purines in the diet, increased production of uric acid by the body, or reduced elimination by the kidneys.
| What is the purpose of this test? |
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| How to prepare? | Usually, no preparation needed. Follow the instructions you receive carefully. |
| Reference values* |
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| Associated tests | In some cases, the amount of uric acid in the urine may also be measured by collecting urine over a 24-hour period. |
| How is it done? | A blood sample is drawn, usually from a vein in the arm. |
| How long before I get the results? | Results are usually ready in a day. It may take longer to receive your results. |
What does an abnormal test result mean?
High values of uric acid:
High blood uric acid level is called hyperuricemia. The following conditions can lead to hyperuricemia:
- gout
- certain kidney diseases
- certain types of cancer (e.g., multiple myeloma, leukemia)
- pregnant women suffering from preeclampsia
Low values of uric acid:
Low blood uric acid level is called hypouricemia. The following conditions can lead to hypouricemia:
- certain kidney anomalies (e.g., Fanconi syndrome)
- certain hereditary disorders
Factors that may affect test results
Upward:
- a diet rich in purines (e.g., red meat, game meat, sardines, anchovies)
- alcohol consumption
- certain medications (e.g., low-dose aspirin, diuretic, chemotherapy)
Downward:
- a diet low in purines
- certain medications (e.g., allopurinol, febuxostat)
What you should know before going for this test
When you go in for a blood test or any other medical exam, it's always a good idea to bring a complete list of any prescriptions, over-the-counter medications, or natural health products you're taking. Unless otherwise advised, it's best to take your medications as usual on blood test days. If in doubt, don't hesitate to talk to your healthcare professional.
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The patient information leaflets are provided by Vigilance Santé Inc. This content is for information purposes only and does not in any manner whatsoever replace the opinion or advice of your health care professional. Always consult a health care professional before making a decision about your medication or treatment.