Kidney Function Panel Updated Apr 17, 2026

Uric Acid

Uric Acid is a blood measurement related to urate, a waste product from the breakdown of purines. On a Uric Acid on a blood test, the result helps describe how much urate is circulating in the blood at that moment. It is often listed on a kidney panel and is read alongside other lab values to give a broader view of blood chemistry.

What Is Uric Acid?

Uric Acid is a blood test value that measures urate, a waste product made when the body breaks down purines from food and normal cell turnover. A Uric Acid on a lab report shows how much of this substance is circulating in the blood at the time of collection. It is a routine chemistry value, often included in a kidney panel, and it reflects how the body is balancing production and removal.

Why Is Uric Acid Tested?

Uric Acid is commonly measured on a kidney panel and may also appear in broader chemistry testing. It helps show how the body is handling urate at the moment of the draw, which adds context to other blood chemistry values. A Uric Acid test is often reviewed with creatinine, blood urea nitrogen (BUN), and electrolytes to describe a more complete lab picture. On a Uric Acid on a blood test, the value can also help track changes over time in routine lab monitoring.

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Uric Acid Normal Range

Group Range Unit
Adult Male 3.5–7 mg/dL
Adult Female 2.5–6 mg/dL

Reference ranges may vary by laboratory and individual factors.

What Does High Uric Acid Mean?

High Uric Acid means the measured urate level is above the Uric Acid reference range for that lab, often above about 7.0 mg/dL in men or 6.0 mg/dL in women. A high Uric Acid test result usually reflects either increased production, reduced removal, or both. In practical terms, high Uric Acid on a lab report can occur when the blood is more concentrated or when more urate remains in circulation than usual.

Associated factors

Dehydration — lower plasma volume concentrates the measured Uric Acid in blood.
High purine intake — a diet rich in purine-containing foods can increase urate production.
Alcohol intake — alcohol can raise urate by changing how the body handles removal.
Intense exercise — heavy exertion can temporarily shift Uric Acid upward through fluid loss and metabolism changes.
Higher body mass — increased turnover and metabolic load can be associated with higher Uric Acid.
Certain medications — some drugs can reduce urate removal or change blood concentration.
High-altitude exposure — lower oxygen environments can shift urate handling and concentration.
Male sex — adult male reference values for Uric Acid are typically higher than adult female values.
Later-day blood draw — time of day can slightly change measured Uric Acid because body water and metabolism vary.

What Does Low Uric Acid Mean?

Low Uric Acid means the measured urate level is below the Uric Acid normal range for that lab, often below about 3.5 mg/dL in adults. A low Uric Acid test result usually reflects lower production, higher removal, or dilution of the blood sample. On a Uric Acid on a lab report, low values are interpreted alongside other chemistry results rather than by themselves.

Associated factors

High fluid intake — extra fluid can dilute the blood and lower measured Uric Acid.
Low purine intake — eating fewer purine-containing foods can reduce urate production.
Pregnancy-related dilution — increased blood volume can lower measured Uric Acid.
Certain medications — some drugs increase urate removal or reduce its formation.
Reduced cell turnover — slower breakdown of body tissues can lower urate production.
Liver-related changes — altered processing of purines can reduce urate levels.
Female sex — adult female Uric Acid values are typically lower than adult male values.
Recent blood donation or blood loss — reduced circulating concentration can lower the measured value.
Lab-to-lab method differences — different measurement platforms can report slightly lower or higher Uric Acid values.

How Uric Acid Relates to Other Values

Uric Acid is often read with creatinine, blood urea nitrogen (BUN), sodium (Na), and potassium (K) on a kidney panel. Creatinine and BUN help show how the kidneys are filtering waste, while Uric Acid adds another waste-product measure to the same blood picture. When Uric Acid is reviewed alongside hematocrit (Hct), red blood cell count (RBC), and mean corpuscular volume (MCV), the pattern can also show whether the blood is more concentrated or more diluted. This is why a Uric Acid on a blood test is best interpreted together with the rest of the panel rather than as a stand-alone number.

What Factors Affect Uric Acid Levels?

Age and sex can shift the Uric Acid reference range, with adult male values usually higher than adult female values. Hydration status can change the concentration, so the same person may show different Uric Acid test results on different days. Diet, alcohol, exercise, altitude, and body size can all influence measured Uric Acid. Pregnancy can lower the value through blood-volume changes, and some medications can raise or lower it. Different laboratories and assay methods may also report slightly different Uric Acid values, even from the same sample.

How It Is Tested

Uric Acid is measured from a standard blood draw, usually from a vein in the arm. The lab analyzes the blood serum or plasma and reports the concentration of urate, most commonly in mg/dL in the US. Some labs may also display the value in mmol/L.

How to Prepare

No fasting is usually required for Uric Acid as part of a kidney panel. Because hydration can affect the result, the measured value may vary with fluid intake before the blood draw.

Frequently Asked Questions

What is the normal range for Uric Acid?
The Uric Acid normal range varies by lab, but a common US reference range is about 3.5 to 7.0 mg/dL for adult males and 2.5 to 6.0 mg/dL for adult females. A Uric Acid reference range can differ slightly between laboratories and testing methods.
What does Uric Acid stand for?
Uric Acid does not stand for an acronym. On a blood test, Uric Acid is the name of the measured substance, which is urate in the blood.
What does a high Uric Acid mean on a lab report?
A high Uric Acid on a lab report means the measured urate level is above the lab’s Uric Acid normal range. This can reflect more urate production, less removal, or a more concentrated blood sample.
What does a low Uric Acid mean on a lab report?
A low Uric Acid on a lab report means the measured urate level is below the lab’s Uric Acid normal range. It often reflects dilution, lower production, or faster removal of urate from the blood.
Can hydration affect Uric Acid?
Yes. Hydration can affect Uric Acid because more fluid in the bloodstream can dilute the measured value, while less fluid can make it look higher. This is one reason Uric Acid test results can vary between draws.
What is the difference between Uric Acid and creatinine?
Uric Acid measures urate, while creatinine measures a different waste product from muscle metabolism. Both are often listed on a kidney panel, but they describe different parts of blood chemistry.
What unit is Uric Acid measured in?
Uric Acid is most often measured in mg/dL on US lab reports. Some labs may also report Uric Acid in mmol/L.
How much can Uric Acid change between tests?
Uric Acid can change modestly between tests because of hydration, diet, exercise, time of day, and lab method differences. Small shifts are common, so a single Uric Acid test result is usually read in context with prior results.
Is Uric Acid different for men and women?
Yes. Adult male Uric Acid values are usually higher than adult female values, so the Uric Acid normal range is often reported separately by sex. This is common on many lab reports.
Why is Uric Acid tested in a kidney panel?
Uric Acid is included in a kidney panel because it adds another measure of how the body is handling waste in the blood. When read with creatinine and BUN, it helps describe the overall chemistry pattern on the lab report.

Disclaimer

This content is for informational and educational purposes only. It is not intended as medical advice, diagnosis, or treatment recommendation. Reference ranges may vary by laboratory. Always discuss your results with a qualified healthcare professional.

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