Explore our database of over 4000 laboratory markers.

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Urea

Urine

Amino Acids; Urine 24-hour (Doctor's Data), Doctor's Data

Optimal range:   180 - 900 mmol/24 hr

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Urea

Blood

NutriStat Basic Profile, US BioTek

Optimal range:   2.8 - 8.1 mmol/L

Urea is a nontoxic byproduct of nitrogen (ammonia) detoxification. It is formed in the liver via the urea cycle and is the end product of protein metabolism. It is essentially a waste product with no physiological function.

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Urea

NutrEval Plasma - Urine and Blood, Genova Diagnostics

Optimal range:   216 - 1156 Units

Urea is a nontoxic byproduct of nitrogen (ammonia) detoxification. It is formed in the liver via the urea cycle and is the end product of protein metabolism. It is essentially a waste product with no physiological function.

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Urea

Metabolimix+, Genova Diagnostics

Optimal range:   150 - 380 mmol/g creatinine

Urea is a nontoxic byproduct of nitrogen (ammonia) detoxification. It is formed in the liver via the urea cycle and is the end product of protein metabolism. It is essentially a waste product with no physiological function.

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Urea

Amino Acids test [Great Plains Laboratory / Doctor's Data], Doctor's Data

Optimal range:   100 - 550 mM/g

Urea is the final excretory product of nitrogen (protein) metabolism in the body.

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Urea

Comprehensive Metabolic Panel (CMP): Biomarkers, Benefits, and Results Explained

Optimal range:   17 - 48 mg/dL , 2.83 - 7.99 mmol/L

→ Waste Product: Urea is a waste product formed in the liver from the breakdown of proteins.

→ Excretion Pathway: It is transported via the bloodstream to the kidneys, where it is filtered out and excreted in urine.

→ Health Indicator: Urea levels are measured to assess kidney function; high levels may indicate kidney dysfunction.

→ Protein Metabolism: It helps remove excess nitrogen from the body, a byproduct of protein metabolism.

→ CMP Component: Urea (or BUN) is a key marker on a Comprehensive Metabolic Panel (CMP) used to monitor overall metabolic and renal health.

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Urea

3102 ION (Blood/Urine) Amino Acids 40, Genova Diagnostics

Optimal range:   216 - 1156 qmol/dL

Urea is a nontoxic byproduct of nitrogen (ammonia) detoxification. It is formed in the liver via the urea cycle and is the end product of protein metabolism. It is essentially a waste product with no physiological function.

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UREA

NutriStat, NutriPATH

Optimal range:   3.5 - 8 mmol/L

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Urea (Urine)

Amino Acids Analysis, Genova Diagnostics

Optimal range:   168 - 465 mmol/g creatinine

Urea is the principal nitrogenous waste product of metabolism and is generated from protein breakdown.

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Urea nitrogen/Creatinine

Kidney Health

Optimal range:   9 - 23 Ratio

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Ureaplasma urealyticum / Ureaplasma parvum

Sexually transmitted disease

Reference range:   Negative, Positive

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Uric Acid

Urine

StoneRisk Diagnostic Profile

Optimal range:   0 - 1.2 Ratio

Likely to form uric acid stones; some people who have increased uric acid also have gout

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Uric Acid

Kidney Health

Optimal range:   3.8 - 8.4 mg/dL , 226.02 - 499.63 µmol/L , 0.23 - 0.50 mmol/L

Uric acid is a natural byproduct formed during the breakdown of our body’s cells and the food that we eat. Excess uric acid can be caused by either an overproduction of uric acid or inefficient removal of it from the blood. The most common affliction associated with excess uric acid is gout, a painful form of arthritis.

May indicate oxidative stress and elevated levels are associated with cardiovascular disease and diabetes. May be elevated due to gout, kidney dysfunction, excess alcohol intake, starvation, extreme calorie restriction, liver dysfunction, hemolytic anemia, excess fructose consumption, fungal infection, ketogenic diet, supplemental niacin, high protein diet, prolonged fasting, supplemental vitamin B3, excess acidity. May be decreased due to nutrient deficiencies (molybdenum, zinc, iron), oxidative stress, low purine intake (vegetarian or vegan), excess alkalinity.

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Uric Acid, female

Kidney Health

Optimal range:   2.5 - 7 mg/dL

Uric acid is a waste product formed when the body breaks down purines, which are natural substances found in certain foods and cells. Uric acid levels are commonly assessed through blood tests as part of a metabolic or comprehensive health evaluation. In females, the normal reference range for uric acid is generally lower compared to males due to hormonal differences, particularly the effects of estrogen, which promotes uric acid excretion by the kidneys.

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Uric acid, Urine

Urine

StoneRisk Diagnostic Profile

Optimal range:   174 - 902 mg/24 hr

Uric acid, a key biomarker assessed through a 24-hour urine test, holds significant clinical relevance in diagnosing and managing various metabolic and renal disorders. Chemically, uric acid is the end product of purine metabolism in humans, arising predominantly from the dietary breakdown of nucleic acids and, to a lesser extent, endogenous purine synthesis. Normally, it is soluble in the blood, filtered by the kidneys, and excreted in urine. However, deviations in its urinary concentration can be indicative of pathological states. Elevated urinary uric acid levels, or hyperuricosuria, can signal conditions such as gout, a form of arthritis characterized by the deposition of monosodium urate crystals in joints due to hyperuricemia.

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Urinary Bladder Cancer Antigen

Tumor / Cancer screening tests

Optimal range:   0 - 33 ug/L

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Urine Creatinine

Metabolimix+, Genova Diagnostics

Optimal range:   0 - 0 mmol/L

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Urine Creatinine

Heavy Metals, Vibrant America

Optimal range:   0.25 - 2.16 mg/ml

Urine creatinine is a crucial marker on an Organic Acids panel, primarily used to assess kidney function and the overall adequacy of urine concentration. Creatinine is a waste product formed from the normal breakdown of muscle tissue and is excreted through the kidneys. Its levels in urine are often evaluated to ensure proper kidney filtration and are used as a baseline to interpret other metabolites on the Organic Acids panel. When urine creatinine is low, it may indicate diluted urine, potentially affecting the accuracy of other metabolite readings. Conversely, high urine creatinine levels might suggest dehydration or impaired kidney function. Monitoring urine creatinine is essential for accurate assessment of metabolic processes and to help rule out issues related to kidney health.

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Urine Occult Blood

Urine

Urinalysis

Optimal range:   0 - 0.001 mg/d

Urine occult blood is a test to determine if there is blood present in the urine and is done, along with several other tests, during a routine analysis of the urine. Although some urine in the blood isn’t unusual, it can also indicate severe problems with the kidneys or cancer.

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Urine pH

Urinalysis

Optimal range:   5 - 7.5 pH

Urine pH is a test to assess the pH level of your urine and is done, along with several other tests, during a routine analysis of the urine. Although some fluctuation of urine pH is normal, excessively acidic or alkaline urine can indicate a problem with the kidneys or digestive system.

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