Uric Acid Test

The uric acid test is a medical laboratory test used to measure the level of uric acid in the blood or urine.

Purpose

The purpose of the uric acid test is to:

• Diagnose and monitor gout, a condition characterized by high levels of uric acid in the blood
• Evaluate kidney function and detect potential kidney problems
• Monitor the effectiveness of treatment for gout or kidney disease

Types of Uric Acid Tests

There are two types of uric acid tests:

• Blood test (serum uric acid): measures the level of uric acid in the blood
• Urine test (urinary uric acid): measures the level of uric acid in a 24-hour urine sample

Procedure

The procedure for a uric acid test typically involves:

• For a blood test: a healthcare professional will draw a blood sample from a vein in the arm using a needle and syringe
• For a urine test: the patient will be asked to collect all their urine over a 24-hour period, usually starting with an empty bladder and ending with an empty bladder the following day

Preparation

To prepare for a uric acid test:

• Avoid eating foods that are high in purines (such as organ meats, seafood, and beer) for at least 24 hours before the test
• Avoid taking certain medications (such as diuretics and aspirin) that can affect uric acid levels, unless instructed to do so by a healthcare professional

Results

The results of a uric acid test are typically reported in units of milligrams per deciliter (mg/dL) or micromoles per liter (μmol/L).

• Normal blood levels: 3.5-7.2 mg/dL (0.21-0.43 μmol/L) for men and 2.6-6.0 mg/dL (0.16-0.36 μmol/L) for women
• Normal urine levels: 250-750 mg per 24 hours

Interpretation

A healthcare professional will interpret the results of a uric acid test, taking into account the patient's medical history and other factors.

• High levels of uric acid may indicate gout, kidney disease, or other conditions such as diabetes or obesity
• Low levels of uric acid may indicate liver or kidney disease, or other conditions such as malnutrition or certain medications

Frequently Asked Questions (FAQs)

What is a uric acid test?
A blood or urine test that measures uric acid levels in the body.

Why is a uric acid test performed?
To diagnose and monitor gout, kidney stones, and kidney disease.

How is a uric acid test done?
Through a blood draw or urine sample collection.

What do high uric acid levels indicate?
Possibly gout, kidney disease, or other medical conditions.

What do low uric acid levels indicate?
May be associated with certain medical conditions, such as liver or kidney disease.

How often should a uric acid test be done?
As recommended by a doctor, typically for monitoring and diagnosis.

Can diet affect uric acid test results?
Possibly, certain foods and drinks may increase uric acid levels.

Are there any risks associated with a uric acid test?
Generally minimal, such as bleeding or bruising from a blood draw.

How long does it usually take to get uric acid test results?
Typically several hours to a few days, depending on the laboratory.

What is the normal range for uric acid levels?
Varies by laboratory and individual factors, typically around 3.5-7.2 mg/dL for adults.