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Lab Test

Phenylalanine - Quantitative Urine 24 Hr Test

The Phenylalanine - Quantitative Urine 24 Hr test measures the amount of phenylalanine in the urine over a 24-hour period. Phenylalanine is an essential amino acid that is critical to the body's production of proteins, other amino acids, and some neurotransmitters. This test can help diagnose and monitor metabolic disorders like phenylketonuria (PKU), a genetic disorder that inhibits the body's ability to metabolize phenylalanine.

  • Profile Name: Phenylalanine - Quantitative Urine 24 Hr Test
  • Sample Type: Urine
  • Preparations Required: No specific instructions are required for this test.
  • Report Time: 4 days

Phenylalanine is obtained through diet, particularly from high protein foods such as meat, dairy, eggs, and certain legumes. The body typically uses what it needs and excretes the rest. However, if the body cannot metabolize phenylalanine properly, it can build up in the bloodstream and the brain, potentially leading to intellectual disability and other neurological problems.

Home Sample Collection Process

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Book your convenient slot
Sample Collection by Phlebotomist
Sample Collection by Phlebotomist
Reporting of the sample at lab
Reporting of the sample at lab
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Download Reports
Frequently Asked Questions

This test may be ordered if a healthcare provider suspects a metabolic disorder like PKU. It can also be used to monitor phenylalanine levels in people already diagnosed with PKU or similar conditions.

This test requires the collection of all urine produced over a 24-hour period. You will be given a collection container and specific instructions to ensure proper collection.

This test is vital in diagnosing and managing PKU and similar metabolic disorders. If left untreated, these conditions can lead to severe intellectual and developmental issues.

No fasting is required for this test.

A geneticist, pediatrician, or neurologist may order this test if they suspect a metabolic disorder.

The test measures the amount of phenylalanine in your urine over a 24-hour period.

If you have been diagnosed with PKU or a similar condition, your doctor will guide you on how often this test should be performed.

Normal results can vary depending on the lab and the individual. Your healthcare provider can explain what your specific results mean.

No specific precautions are needed for this test. Continue your regular diet and medications unless instructed otherwise by your healthcare provider.

Dietary intake, liver disease, medications, and certain genetic conditions can influence phenylalanine levels.

High phenylalanine levels can indicate a metabolic disorder like PKU. If left untreated, this can lead to intellectual disability, neurological problems, and other health issues.

Yes, especially in individuals with PKU or similar conditions. These individuals may need to follow a low-phenylalanine diet to prevent complications.

Collecting a urine sample is typically painless.

There are no significant risks associated with providing a urine sample.

If your test results show high phenylalanine levels, your healthcare provider may order additional tests to confirm the diagnosis and plan the appropriate treatment.

Your healthcare provider will provide specific instructions for collecting a 24-hour urine sample. This typically involves collecting all urine passed over a 24-hour period in a provided container.

Yes, phenylalanine levels can fluctuate based on diet, medications, and overall health. Regular monitoring is crucial for individuals with metabolic disorders.

The treatment for high phenylalanine levels typically involves a low-phenylalanine diet. Some individuals may also require medication.

Test results are typically available within 1-3 days, but this can vary depending on the lab.

Phenylalanine is an essential amino acid and is typically harmless in normal levels. However, in individuals with certain metabolic disorders, high levels of phenylalanine can be harmful.

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