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Phenylalanine - PA

What does the Phenylalanine - PA blood test mean? Get a free analysis of your blood test now. Here's what you get with our free analysis:

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The Phenylalanine (PA) test measures the level of this essential amino acid in the blood. It's crucial for detecting phenylketonuria (PKU), a rare genetic disorder that can cause intellectual disability if left untreated. PA is also important for the production of other amino acids and neurotransmitters. This test is part of newborn screening programs and can be used to monitor individuals with known PKU or other metabolic disorders. Elevated levels may indicate PKU, liver disease, or other metabolic issues, while low levels might suggest malnutrition or certain genetic conditions.

Acceptable Range:   26 to 120
Ideal for Women:   35-80
Ideal for Men:   35-80
Ideal for Girls:   35-80
Ideal for Boys:   35-80
Test Method: blood

What do readings below 26 μmol/L for Phenylalanine - PA mean?

A low phenylalanine level may indicate:

  1. Malnutrition or protein deficiency
  2. Certain liver diseases
  3. Tyrosinemia (a rare genetic disorder)
  4. Overactive thyroid (hyperthyroidism)
  5. Genetic variations in phenylalanine metabolism

Low levels can lead to confusion, depression, memory problems, and reduced alertness. It’s important to consult with a healthcare provider to determine the underlying cause and appropriate treatment.

What do readings above 120 μmol/L for Phenylalanine - PA mean?

Elevated phenylalanine levels may indicate:

  1. Phenylketonuria (PKU), a genetic disorder affecting phenylalanine metabolism
  2. Liver disease or dysfunction
  3. Certain cancers
  4. Inflammation or infection
  5. Tyrosine hydroxylase deficiency

High levels can lead to intellectual disability, seizures, behavioral problems, and other neurological issues if left untreated, especially in infants and young children. Immediate medical attention is crucial to prevent potential complications and determine appropriate management strategies.

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